Merge pull request #4268 from manuelbuil/update_flannel_dual_stack_1.20

README.md

@@ -29,7 +29,7 @@ K3s is a [fully conformant](https://github.com/cncf/k8s-conformance/pulls?q=is%3
 K3s bundles the following technologies together into a single cohesive distribution:
 
 * [Containerd](https://containerd.io/) & [runc](https://github.com/opencontainers/runc)
-* [Flannel](https://github.com/coreos/flannel) for CNI
+* [Flannel](https://github.com/flannel-io/flannel) for CNI
 * [CoreDNS](https://coredns.io/)
 * [Metrics Server](https://github.com/kubernetes-sigs/metrics-server)
 * [Traefik](https://containo.us/traefik/) for ingress

go.mod

@@ -17,7 +17,6 @@ replace (
 	github.com/containerd/ttrpc => github.com/containerd/ttrpc v1.0.2
 	github.com/containerd/typeurl => github.com/containerd/typeurl v1.0.2
 	github.com/containerd/zfs => github.com/containerd/zfs v1.0.0
-	github.com/coreos/flannel => github.com/k3s-io/flannel v0.12.0-k3s2
 	github.com/coreos/go-systemd => github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e
 	github.com/docker/distribution => github.com/docker/distribution v2.7.1-0.20190205005809-0d3efadf0154+incompatible
 	github.com/docker/docker => github.com/docker/docker v17.12.0-ce-rc1.0.20200310163718-4634ce647cf2+incompatible
@@ -79,11 +78,11 @@ require (
 	github.com/containerd/go-cni v1.0.2 // indirect
 	github.com/containerd/imgcrypt v1.1.1 // indirect
 	github.com/containernetworking/plugins v0.9.1 // indirect
-	github.com/coreos/flannel v0.12.0
 	github.com/coreos/go-iptables v0.5.0
 	github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f
 	github.com/docker/docker v20.10.0-beta1.0.20201108103107-c7109494fe65+incompatible
 	github.com/erikdubbelboer/gspt v0.0.0-20190125194910-e68493906b83
+	github.com/flannel-io/flannel v0.14.1
 	github.com/go-bindata/go-bindata v3.1.2+incompatible
 	github.com/go-sql-driver/mysql v1.4.1
 	github.com/google/cadvisor v0.38.8

go.sum

@@ -165,9 +165,11 @@ github.com/containerd/ttrpc v1.0.2/go.mod h1:UAxOpgT9ziI0gJrmKvgcZivgxOp8iFPSk8h
 github.com/containerd/typeurl v1.0.2 h1:Chlt8zIieDbzQFzXzAeBEF92KhExuE4p9p92/QmY7aY=
 github.com/containerd/typeurl v1.0.2/go.mod h1:9trJWW2sRlGub4wZJRTW83VtbOLS6hwcDZXTn6oPz9s=
 github.com/containerd/zfs v1.0.0/go.mod h1:m+m51S1DvAP6r3FcmYCp54bQ34pyOwTieQDNRIRHsFY=
+github.com/containernetworking/cni v0.7.1/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
 github.com/containernetworking/cni v0.8.0/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
 github.com/containernetworking/cni v0.8.1 h1:7zpDnQ3T3s4ucOuJ/ZCLrYBxzkg0AELFfII3Epo9TmI=
 github.com/containernetworking/cni v0.8.1/go.mod h1:LGwApLUm2FpoOfxTDEeq8T9ipbpZ61X79hmU3w8FmsY=
+github.com/containernetworking/plugins v0.8.6/go.mod h1:qnw5mN19D8fIwkqW7oHHYDHVlzhJpcY6TQxn/fUyDDM=
 github.com/containernetworking/plugins v0.9.1 h1:FD1tADPls2EEi3flPc2OegIY1M9pUa9r2Quag7HMLV8=
 github.com/containernetworking/plugins v0.9.1/go.mod h1:xP/idU2ldlzN6m4p5LmGiwRDjeJr6FLK6vuiUwoH7P8=
 github.com/containers/ocicrypt v1.1.1 h1:prL8l9w3ntVqXvNH1CiNn5ENjcCnr38JqpSyvKKB4GI=
@@ -177,7 +179,7 @@ github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkE
 github.com/coreos/etcd v3.1.11+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
-github.com/coreos/go-iptables v0.4.0/go.mod h1:/mVI274lEDI2ns62jHCDnCyBF9Iwsmekav8Dbxlm1MU=
+github.com/coreos/go-iptables v0.4.5/go.mod h1:/mVI274lEDI2ns62jHCDnCyBF9Iwsmekav8Dbxlm1MU=
 github.com/coreos/go-iptables v0.5.0 h1:mw6SAibtHKZcNzAsOxjoHIG0gy5YFHhypWSSNc6EjbQ=
 github.com/coreos/go-iptables v0.5.0/go.mod h1:/mVI274lEDI2ns62jHCDnCyBF9Iwsmekav8Dbxlm1MU=
 github.com/coreos/go-oidc v2.1.0+incompatible h1:sdJrfw8akMnCuUlaZU3tE/uYXFgfqom8DBE9so9EBsM=
@@ -256,6 +258,8 @@ github.com/fatih/camelcase v1.0.0 h1:hxNvNX/xYBp0ovncs8WyWZrOrpBNub/JfaMvbURyft8
 github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwoZc+/fpc=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
+github.com/flannel-io/flannel v0.14.1 h1:18j/zszdoBPG2Y2yk0MsZYIKZBhVKb5fknZm2lJcbW4=
+github.com/flannel-io/flannel v0.14.1/go.mod h1:qZhrC3nxQudgshBtTb5rBqFxeYtQGRa4AQGwKi4u4Ds=
 github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568/go.mod h1:xEzjJPgXI435gkrCt3MPfRiAkVrwSbHsst4LCFVfpJc=
 github.com/fogleman/gg v1.2.1-0.20190220221249-0403632d5b90/go.mod h1:R/bRT+9gY/C5z7JzPU0zXsXHKM4/ayA+zqcVNZzPa1k=
 github.com/form3tech-oss/jwt-go v3.2.2+incompatible h1:TcekIExNqud5crz4xD2pavyTgWiPvpYe4Xau31I0PRk=
@@ -521,12 +525,6 @@ github.com/k3s-io/cri-tools v1.20.0-k3s1 h1:pd6/NWvCwMeBiBvvkGSCBQHlVJFQ5Vj2f1oX
 github.com/k3s-io/cri-tools v1.20.0-k3s1/go.mod h1:APtxWLVkA6SNZxmG5/ETT3QAxG0BptTtFc8EywLSdLQ=
 github.com/k3s-io/etcd v0.5.0-alpha.5.0.20201208200253-50621aee4aea h1:7cwby0GoNAi8IsVrT0q+JfQpB6V76ZaEGhj6qts/mvU=
 github.com/k3s-io/etcd v0.5.0-alpha.5.0.20201208200253-50621aee4aea/go.mod h1:yVHk9ub3CSBatqGNg7GRmsnfLWtoW60w4eDYfh7vHDg=
-github.com/k3s-io/flannel v0.12.0-k3s2 h1:KEfj4fe+P0qINcYZxo5/C0cga2XBEfeV4nhKrUGDyCg=
-github.com/k3s-io/flannel v0.12.0-k3s2/go.mod h1:2tCkIFWhim43MkRsOcPOxY8/Bcpai9uZLJaywN7ciNg=
-github.com/k3s-io/go-powershell v0.0.0-20200701182037-6845e6fcfa79 h1:9naOL3iAREsJh9mbf9C6Qqu9xuFv7/jIGBFCWvZMg4E=
-github.com/k3s-io/go-powershell v0.0.0-20200701182037-6845e6fcfa79/go.mod h1:lsDHcxq5ugFJff6YHEwpzLh31NDv0B2cIKki1ViQ65o=
-github.com/k3s-io/go-powershell v0.0.0-20201118222746-51f4c451fbd7 h1:C+6IIP6yECS10qkq2EeGQjr2ts0k7UxrutGF+pLPSnU=
-github.com/k3s-io/go-powershell v0.0.0-20201118222746-51f4c451fbd7/go.mod h1:wJnuh+xbDmskSfAM3UikTsGO8kaWLu3iycSgUKAiYjQ=
 github.com/k3s-io/helm-controller v0.10.5 h1:zrStmx4ZkhtFU/OqJYoAZFGFB1Bu+jZs0N8dtlVRxDk=
 github.com/k3s-io/helm-controller v0.10.5/go.mod h1:nZP8FH3KZrNNUf5r+SwwiMR63HS6lxdHdpHijgPfF74=
 github.com/k3s-io/kine v0.6.2 h1:1aJTPfB8HG4exqMKFVE5H0z4bepF05tJHtYNXotWXa4=
@@ -718,6 +716,7 @@ github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
 github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
 github.com/olekukonko/tablewriter v0.0.0-20170122224234-a0225b3f23b5/go.mod h1:vsDQFd/mU46D+Z4whnwzcISnGGzXWMclvtLoiIKAKIo=
+github.com/onsi/ginkgo v0.0.0-20151202141238-7f8ab55aaf3b/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v0.0.0-20170829012221-11459a886d9c/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.8.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
@@ -726,6 +725,7 @@ github.com/onsi/ginkgo v1.11.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
 github.com/onsi/ginkgo v1.14.2 h1:8mVmC9kjFFmA8H4pKMUhcblgifdkOIXPvbhN1T36q1M=
 github.com/onsi/ginkgo v1.14.2/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
+github.com/onsi/gomega v0.0.0-20151007035656-2152b45fa28a/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v0.0.0-20170829124025-dcabb60a477c/go.mod h1:C1qb7wdrVGGVU+Z6iS04AVkA3Q65CEZX59MT0QO5uiA=
 github.com/onsi/gomega v1.5.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
 github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
@@ -790,8 +790,6 @@ github.com/prometheus/procfs v0.2.0 h1:wH4vA7pcjKuZzjF7lM8awk4fnuJO6idemZXoKnULU
 github.com/prometheus/procfs v0.2.0/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
 github.com/prometheus/tsdb v0.7.1/go.mod h1:qhTCs0VvXwvX/y3TZrWD7rabWM+ijKTux40TwIPHuXU=
 github.com/quobyte/api v0.1.8/go.mod h1:jL7lIHrmqQ7yh05OJ+eEEdHr0u/kmT1Ff9iHd+4H6VI=
-github.com/rakelkar/gonetsh v0.0.0-20190930180311-e5c5ffe4bdf0 h1:iXE9kmlAqhusXxzkXictdNgWS7p4ZBnmv9SdyMgTf6E=
-github.com/rakelkar/gonetsh v0.0.0-20190930180311-e5c5ffe4bdf0/go.mod h1:4XHkfaUj+URzGO9sohoAgt2V9Y8nIW7fugpu0E6gShk=
 github.com/rancher/dynamiclistener v0.2.2 h1:70dMwOr1sqb6mQqfU2nDb/fr5cv7HJjH+kFYzoxb8KU=
 github.com/rancher/dynamiclistener v0.2.2/go.mod h1:9WusTANoiRr8cDWCTtf5txieulezHbpv4vhLADPp0zU=
 github.com/rancher/moq v0.0.0-20190404221404-ee5226d43009/go.mod h1:wpITyDPTi/Na5h73XkbuEf2AP9fbgrIGqqxVzFhYD6U=
@@ -890,6 +888,7 @@ github.com/syndtr/gocapability v0.0.0-20180916011248-d98352740cb2/go.mod h1:hkRG
 github.com/tchap/go-patricia v2.3.0+incompatible h1:GkY4dP3cEfEASBPPkWd+AmjYxhmDkqO9/zg7R0lSQRs=
 github.com/tchap/go-patricia v2.3.0+incompatible/go.mod h1:bmLyhP68RS6kStMGxByiQ23RP/odRBOTVjwp2cDyi6I=
 github.com/tektoncd/pipeline v0.4.0/go.mod h1:IZzJdiX9EqEMuUcgdnElozdYYRh0/ZRC+NKMLj1K3Yw=
+github.com/tencentcloud/tencentcloud-sdk-go v1.0.67/go.mod h1:asUz5BPXxgoPGaRgZaVm1iGcUAuHyYUo1nXqKa83cvI=
 github.com/thecodeteam/goscaleio v0.1.0/go.mod h1:68sdkZAsK8bvEwBlbQnlLS+xU+hvLYM/iQ8KXej1AwM=
 github.com/tidwall/pretty v1.0.0 h1:HsD+QiTn7sK6flMKIvNmpqz1qrpP3Ps6jOKIKMooyg4=
 github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
@@ -908,11 +907,11 @@ github.com/urfave/cli/v2 v2.3.0 h1:qph92Y649prgesehzOrQjdWyxFOp/QVM+6imKHad91M=
 github.com/urfave/cli/v2 v2.3.0/go.mod h1:LJmUH05zAU44vOAcrfzZQKsZbVcdbOG8rtL3/XcUArI=
 github.com/urfave/negroni v1.0.0/go.mod h1:Meg73S6kFm/4PpbYdq35yYWoCZ9mS/YSx+lKnmiohz4=
 github.com/vektah/gqlparser v1.1.2/go.mod h1:1ycwN7Ij5njmMkPPAOaRFY4rET2Enx7IkVv3vaXspKw=
-github.com/vishvananda/netlink v0.0.0-20170220200719-fe3b5664d23a/go.mod h1:+SR5DhBJrl6ZM7CoCKvpw5BKroDKQ+PJqOg65H/2ktk=
+github.com/vishvananda/netlink v0.0.0-20181108222139-023a6dafdcdf/go.mod h1:+SR5DhBJrl6ZM7CoCKvpw5BKroDKQ+PJqOg65H/2ktk=
 github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE=
 github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852 h1:cPXZWzzG0NllBLdjWoD1nDfaqu98YMv+OneaKc8sPOA=
 github.com/vishvananda/netlink v1.1.1-0.20201029203352-d40f9887b852/go.mod h1:twkDnbuQxJYemMlGd4JFIcuhgX83tXhKS2B/PRMpOho=
-github.com/vishvananda/netns v0.0.0-20170219233438-54f0e4339ce7/go.mod h1:ZjcWmFBXmLKZu9Nxj3WKYEafiSqer2rnvPr0en9UNpI=
+github.com/vishvananda/netns v0.0.0-20180720170159-13995c7128cc/go.mod h1:ZjcWmFBXmLKZu9Nxj3WKYEafiSqer2rnvPr0en9UNpI=
 github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae h1:4hwBBUfQCFe3Cym0ZtKyq7L16eZUtYKs+BaHDN6mAns=
 github.com/vishvananda/netns v0.0.0-20200728191858-db3c7e526aae/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
@@ -1176,7 +1175,6 @@ k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd h1:sOHNzJIkytDF6qadMNKhhD
 k8s.io/kube-openapi v0.0.0-20201113171705-d219536bb9fd/go.mod h1:WOJ3KddDSol4tAGcJo0Tvi+dK12EcqSLqcWsryKMpfM=
 k8s.io/system-validators v1.2.0/go.mod h1:bPldcLgkIUK22ALflnsXk8pvkTEndYdNuaHH6gRrl0Q=
 k8s.io/utils v0.0.0-20190506122338-8fab8cb257d5/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
-k8s.io/utils v0.0.0-20200324210504-a9aa75ae1b89/go.mod h1:sZAwmy6armz5eXlNoLmJcl4F1QuKu7sr+mFQ0byX7Ew=
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920 h1:CbnUZsM497iRC5QMVkHwyl8s2tB3g7yaSHkYPkpgelw=
 k8s.io/utils v0.0.0-20201110183641-67b214c5f920/go.mod h1:jPW/WVKK9YHAvNhRxK0md/EJ228hCsBRufyofKtW8HA=
 modernc.org/cc v1.0.0/go.mod h1:1Sk4//wdnYJiUIxnW8ddKpaOJCF37yAdqYnkxUpaYxw=

pkg/agent/flannel/flannel.go

@@ -21,18 +21,18 @@ import (
 	"path/filepath"
 	"sync"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/network"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet/kube"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/network"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet/kube"
 	"golang.org/x/net/context"
 	log "k8s.io/klog"
 
 	// Backends need to be imported for their init() to get executed and them to register
-	_ "github.com/coreos/flannel/backend/extension"
-	_ "github.com/coreos/flannel/backend/hostgw"
-	_ "github.com/coreos/flannel/backend/ipsec"
-	_ "github.com/coreos/flannel/backend/vxlan"
+	_ "github.com/flannel-io/flannel/backend/extension"
+	_ "github.com/flannel-io/flannel/backend/hostgw"
+	_ "github.com/flannel-io/flannel/backend/ipsec"
+	_ "github.com/flannel-io/flannel/backend/vxlan"
 )
 
 const (
@@ -45,7 +45,7 @@ func flannel(ctx context.Context, flannelIface *net.Interface, flannelConf, kube
 		return err
 	}
 
-	sm, err := kube.NewSubnetManager("", kubeConfigFile, "flannel.alpha.coreos.com", flannelConf)
+	sm, err := kube.NewSubnetManager(ctx, "", kubeConfigFile, "flannel.alpha.coreos.com", flannelConf)
 	if err != nil {
 		return err
 	}
@@ -63,7 +63,7 @@ func flannel(ctx context.Context, flannelIface *net.Interface, flannelConf, kube
 		return err
 	}
 
-	bn, err := be.RegisterNetwork(ctx, sync.WaitGroup{}, config)
+	bn, err := be.RegisterNetwork(ctx, &sync.WaitGroup{}, config)
 	if err != nil {
 		return err
 	}
@@ -90,14 +90,14 @@ func LookupExtIface(iface *net.Interface) (*backend.ExternalInterface, error) {
 
 	if iface == nil {
 		log.Info("Determining IP address of default interface")
-		if iface, err = ip.GetDefaultGatewayIface(); err != nil {
+		if iface, err = ip.GetDefaultGatewayInterface(); err != nil {
 			return nil, fmt.Errorf("failed to get default interface: %s", err)
 		}
 	} else {
 		log.Info("Determining IP address of specified interface: ", iface.Name)
 	}
 
-	ifaceAddr, err = ip.GetIfaceIP4Addr(iface)
+	ifaceAddr, err = ip.GetInterfaceIP4Addr(iface)
 	if err != nil {
 		return nil, fmt.Errorf("failed to find IPv4 address for interface %s", iface.Name)
 	}

vendor/github.com/benmoss/go-powershell/LICENSE

-Copyright (c) 2017, Gorillalabs
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-
-http://www.opensource.org/licenses/MIT

vendor/github.com/benmoss/go-powershell/README.md

-# go-powershell
-
-_NOTE: this repository has been recently (2020-11-18) moved out of the github.com/rancher org to github.com/k3s-io
-supporting the [acceptance of K3s as a CNCF sandbox project](https://github.com/cncf/toc/pull/447)_.
----
-
-This package is inspired by [jPowerShell](https://github.com/profesorfalken/jPowerShell)
-and allows one to run and remote-control a PowerShell session. Use this if you
-don't have a static script that you want to execute, bur rather run dynamic
-commands.
-
-## Installation
-
-    go get github.com/k3s-io/go-powershell
-
-## Usage
-
-To start a PowerShell shell, you need a backend. Backends take care of starting
-and controlling the actual powershell.exe process. In most cases, you will want
-to use the Local backend, which just uses ``os/exec`` to start the process.
-
-```go
-package main
-
-import (
-	"fmt"
-
-	ps "github.com/k3s-io/go-powershell"
-	"github.com/k3s-io/go-powershell/backend"
-)
-
-func main() {
-	// choose a backend
-	back := &backend.Local{}
-
-	// start a local powershell process
-	shell, err := ps.New(back)
-	if err != nil {
-		panic(err)
-	}
-	defer shell.Exit()
-
-	// ... and interact with it
-	stdout, stderr, err := shell.Execute("Get-WmiObject -Class Win32_Processor")
-	if err != nil {
-		panic(err)
-	}
-
-	fmt.Println(stdout)
-}
-```
-
-## Remote Sessions
-
-You can use an existing PS shell to use PSSession cmdlets to connect to remote
-computers. Instead of manually handling that, you can use the Session middleware,
-which takes care of authentication. Note that you can still use the "raw" shell
-to execute commands on the computer where the powershell host process is running.
-
-```go
-package main
-
-import (
-	"fmt"
-
-	ps "github.com/k3s-io/go-powershell"
-	"github.com/k3s-io/go-powershell/backend"
-	"github.com/k3s-io/go-powershell/middleware"
-)
-
-func main() {
-	// choose a backend
-	back := &backend.Local{}
-
-	// start a local powershell process
-	shell, err := ps.New(back)
-	if err != nil {
-		panic(err)
-	}
-
-	// prepare remote session configuration
-	config := middleware.NewSessionConfig()
-	config.ComputerName = "remote-pc-1"
-
-	// create a new shell by wrapping the existing one in the session middleware
-	session, err := middleware.NewSession(shell, config)
-	if err != nil {
-		panic(err)
-	}
-	defer session.Exit() // will also close the underlying ps shell!
-
-	// everything run via the session is run on the remote machine
-	stdout, stderr, err = session.Execute("Get-WmiObject -Class Win32_Processor")
-	if err != nil {
-		panic(err)
-	}
-
-	fmt.Println(stdout)
-}
-```
-
-Note that a single shell instance is not safe for concurrent use, as are remote
-sessions. You can have as many remote sessions using the same shell as you like,
-but you must execute commands serially. If you need concurrency, you can just
-spawn multiple PowerShell processes (i.e. call ``.New()`` multiple times).
-
-Also, note that all commands that you execute are wrapped in special echo
-statements to delimit the stdout/stderr streams. After ``.Execute()``ing a command,
-you can therefore not access ``$LastExitCode`` anymore and expect meaningful
-results.
-
-## License
-
-MIT, see LICENSE file.

vendor/github.com/benmoss/go-powershell/backend/local.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import (
-	"io"
-	"os/exec"
-
-	"github.com/pkg/errors"
-)
-
-type Local struct{}
-
-func (b *Local) StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error) {
-	command := exec.Command(cmd, args...)
-
-	stdin, err := command.StdinPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stdin stream")
-	}
-
-	stdout, err := command.StdoutPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stdout stream")
-	}
-
-	stderr, err := command.StderrPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stderr stream")
-	}
-
-	err = command.Start()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not spawn PowerShell process")
-	}
-
-	return command, stdin, stdout, stderr, nil
-}

vendor/github.com/benmoss/go-powershell/backend/ssh.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import (
-	"fmt"
-	"io"
-	"regexp"
-	"strings"
-
-	"github.com/pkg/errors"
-)
-
-// sshSession exists so we don't create a hard dependency on crypto/ssh.
-type sshSession interface {
-	Waiter
-
-	StdinPipe() (io.WriteCloser, error)
-	StdoutPipe() (io.Reader, error)
-	StderrPipe() (io.Reader, error)
-	Start(string) error
-}
-
-type SSH struct {
-	Session sshSession
-}
-
-func (b *SSH) StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error) {
-	stdin, err := b.Session.StdinPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stdin stream")
-	}
-
-	stdout, err := b.Session.StdoutPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stdout stream")
-	}
-
-	stderr, err := b.Session.StderrPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stderr stream")
-	}
-
-	err = b.Session.Start(b.createCmd(cmd, args))
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not spawn process via SSH")
-	}
-
-	return b.Session, stdin, stdout, stderr, nil
-}
-
-func (b *SSH) createCmd(cmd string, args []string) string {
-	parts := []string{cmd}
-	simple := regexp.MustCompile(`^[a-z0-9_/.~+-]+$`)
-
-	for _, arg := range args {
-		if !simple.MatchString(arg) {
-			arg = b.quote(arg)
-		}
-
-		parts = append(parts, arg)
-	}
-
-	return strings.Join(parts, " ")
-}
-
-func (b *SSH) quote(s string) string {
-	return fmt.Sprintf(`"%s"`, s)
-}

vendor/github.com/benmoss/go-powershell/backend/types.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import "io"
-
-type Waiter interface {
-	Wait() error
-}
-
-type Starter interface {
-	StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error)
-}

vendor/github.com/benmoss/go-powershell/go.mod

-module github.com/k3s-io/go-powershell
-
-go 1.14
-
-require github.com/pkg/errors v0.9.1

vendor/github.com/benmoss/go-powershell/go.sum

-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=

vendor/github.com/benmoss/go-powershell/shell.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package powershell
-
-import (
-	"fmt"
-	"io"
-	"regexp"
-	"sync"
-
-	"github.com/k3s-io/go-powershell/backend"
-	"github.com/k3s-io/go-powershell/utils"
-	"github.com/pkg/errors"
-)
-
-const newline = "\r\n"
-
-type Shell interface {
-	Execute(cmd string) (string, string, error)
-	Exit()
-}
-
-type shell struct {
-	handle backend.Waiter
-	stdin  io.Writer
-	stdout io.Reader
-	stderr io.Reader
-}
-
-func New(backend backend.Starter) (Shell, error) {
-	handle, stdin, stdout, stderr, err := backend.StartProcess("powershell.exe", "-NoExit", "-Command", "-")
-	if err != nil {
-		return nil, err
-	}
-
-	return &shell{handle, stdin, stdout, stderr}, nil
-}
-
-func (s *shell) Execute(cmd string) (string, string, error) {
-	if s.handle == nil {
-		return "", "", errors.Wrap(errors.New(cmd), "Cannot execute commands on closed shells.")
-	}
-
-	outBoundary := createBoundary()
-	errBoundary := createBoundary()
-
-	// wrap the command in special markers so we know when to stop reading from the pipes
-	full := fmt.Sprintf("%s; echo '%s'; [Console]::Error.WriteLine('%s')%s", cmd, outBoundary, errBoundary, newline)
-
-	_, err := s.stdin.Write([]byte(full))
-	if err != nil {
-		return "", "", errors.Wrap(errors.Wrap(err, cmd), "Could not send PowerShell command")
-	}
-
-	// read stdout and stderr
-	sout := ""
-	serr := ""
-
-	waiter := &sync.WaitGroup{}
-	waiter.Add(2)
-
-	go streamReader(s.stdout, outBoundary, &sout, waiter)
-	go streamReader(s.stderr, errBoundary, &serr, waiter)
-
-	waiter.Wait()
-
-	if len(serr) > 0 {
-		return sout, serr, errors.Wrap(errors.New(cmd), serr)
-	}
-
-	return sout, serr, nil
-}
-
-func (s *shell) Exit() {
-	s.stdin.Write([]byte("exit" + newline))
-
-	// if it's possible to close stdin, do so (some backends, like the local one,
-	// do support it)
-	closer, ok := s.stdin.(io.Closer)
-	if ok {
-		closer.Close()
-	}
-
-	s.handle.Wait()
-
-	s.handle = nil
-	s.stdin = nil
-	s.stdout = nil
-	s.stderr = nil
-}
-
-func streamReader(stream io.Reader, boundary string, buffer *string, signal *sync.WaitGroup) error {
-	// read all output until we have found our boundary token
-	output := ""
-	bufsize := 64
-	marker := regexp.MustCompile("(?s)(.*)" + regexp.QuoteMeta(boundary))
-
-	for {
-		buf := make([]byte, bufsize)
-		read, err := stream.Read(buf)
-		if err != nil {
-			return err
-		}
-
-		output = output + string(buf[:read])
-
-		if marker.MatchString(output) {
-			break
-		}
-	}
-
-	*buffer = marker.FindStringSubmatch(output)[1]
-	signal.Done()
-
-	return nil
-}
-
-func createBoundary() string {
-	return "$gorilla" + utils.CreateRandomString(12) + "$"
-}

vendor/github.com/containernetworking/plugins/pkg/utils/sysctl/sysctl_linux.go

+// Copyright 2016 CNI authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sysctl
+
+import (
+	"fmt"
+	"io/ioutil"
+	"path/filepath"
+	"strings"
+)
+
+// Sysctl provides a method to set/get values from /proc/sys - in linux systems
+// new interface to set/get values of variables formerly handled by sysctl syscall
+// If optional `params` have only one string value - this function will
+// set this value into corresponding sysctl variable
+func Sysctl(name string, params ...string) (string, error) {
+	if len(params) > 1 {
+		return "", fmt.Errorf("unexcepted additional parameters")
+	} else if len(params) == 1 {
+		return setSysctl(name, params[0])
+	}
+	return getSysctl(name)
+}
+
+func getSysctl(name string) (string, error) {
+	fullName := filepath.Join("/proc/sys", toNormalName(name))
+	fullName = filepath.Clean(fullName)
+	data, err := ioutil.ReadFile(fullName)
+	if err != nil {
+		return "", err
+	}
+
+	return string(data[:len(data)-1]), nil
+}
+
+func setSysctl(name, value string) (string, error) {
+	fullName := filepath.Join("/proc/sys", toNormalName(name))
+	fullName = filepath.Clean(fullName)
+	if err := ioutil.WriteFile(fullName, []byte(value), 0644); err != nil {
+		return "", err
+	}
+
+	return getSysctl(name)
+}
+
+// Normalize names by using slash as separator
+// Sysctl names can use dots or slashes as separator:
+// - if dots are used, dots and slashes are interchanged.
+// - if slashes are used, slashes and dots are left intact.
+// Separator in use is determined by first occurrence.
+func toNormalName(name string) string {
+	interchange := false
+	for _, c := range name {
+		if c == '.' {
+			interchange = true
+			break
+		}
+		if c == '/' {
+			break
+		}
+	}
+
+	if interchange {
+		r := strings.NewReplacer(".", "/", "/", ".")
+		return r.Replace(name)
+	}
+	return name
+}

vendor/github.com/coreos/flannel/pkg/ip/iface_windows.go

-// Copyright 2015 flannel authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package ip
-
-import (
-	netsh "github.com/rakelkar/gonetsh/netsh"
-	"net"
-)
-
-func GetIfaceIP4Addr(iface *net.Interface) (net.IP, error) {
-	// get ip address for the interface
-	// prefer global unicast to link local addresses
-	netHelper := netsh.New(nil)
-	ifaceDetails, err := netHelper.GetInterfaceByName(iface.Name)
-	if err != nil {
-		return nil, err
-	}
-
-	ifAddr := net.ParseIP(ifaceDetails.IpAddress)
-
-	return ifAddr, nil
-}
-
-func GetDefaultGatewayIface() (*net.Interface, error) {
-	netHelper := netsh.New(nil)
-
-	defaultIfaceName, err := netHelper.GetDefaultGatewayIfaceName()
-	if err != nil {
-		return nil, err
-	}
-
-	iface, err := net.InterfaceByName(defaultIfaceName)
-	if err != nil {
-		return nil, err
-	}
-
-	return iface, nil
-}
-
-func GetInterfaceByIP(ip net.IP) (*net.Interface, error) {
-	netHelper := netsh.New(nil)
-
-	ifaceDetails, err := netHelper.GetInterfaceByIP(ip.String())
-	if err != nil {
-		return nil, err
-	}
-
-	iface, err := net.InterfaceByName(ifaceDetails.Name)
-	if err != nil {
-		return nil, err
-	}
-
-	return iface, nil
-}

vendor/github.com/coreos/flannel/backend/common.go → vendor/github.com/flannel-io/flannel/backend/common.go

@@ -20,7 +20,7 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/subnet"
 )
 
 type ExternalInterface struct {
@@ -35,7 +35,7 @@ type ExternalInterface struct {
 // needed.
 type Backend interface {
 	// Called when the backend should create or begin managing a new network
-	RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (Network, error)
+	RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (Network, error)
 }
 
 type Network interface {

vendor/github.com/coreos/flannel/backend/extension/extension.go → vendor/github.com/flannel-io/flannel/backend/extension/extension.go

@@ -24,12 +24,11 @@ import (
 	"os/exec"
 	"sync"
 
-	log "k8s.io/klog"
-
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
 	"golang.org/x/net/context"
+	log "k8s.io/klog"
 )
 
 func init() {
@@ -56,7 +55,7 @@ func (_ *ExtensionBackend) Run(ctx context.Context) {
 	<-ctx.Done()
 }
 
-func (be *ExtensionBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+func (be *ExtensionBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 	n := &network{
 		extIface: be.extIface,
 		sm:       be.sm,
@@ -134,9 +133,8 @@ func (be *ExtensionBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGro
 
 // Run a cmd, returning a combined stdout and stderr.
 func runCmd(env []string, stdin string, name string, arg ...string) (string, error) {
-	env = append(env, fmt.Sprintf("PATH=%s", os.Getenv("PATH")))
 	cmd := exec.Command(name, arg...)
-	cmd.Env = env
+	cmd.Env = append(os.Environ(), env...)
 
 	stdinpipe, err := cmd.StdinPipe()
 	if err != nil {

vendor/github.com/coreos/flannel/backend/extension/extension_network.go → vendor/github.com/flannel-io/flannel/backend/extension/extension_network.go

@@ -18,13 +18,13 @@ import (
 	"encoding/json"
 	"sync"
 
-	log "k8s.io/klog"
 	"golang.org/x/net/context"
 
 	"fmt"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 type network struct {
@@ -61,11 +61,12 @@ func (n *network) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtBatch := <-evts:
+		case evtBatch, ok := <-evts:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			n.handleSubnetEvents(evtBatch)
-
-		case <-ctx.Done():
-			return
 		}
 	}
 }

vendor/github.com/coreos/flannel/backend/hostgw/hostgw.go → vendor/github.com/flannel-io/flannel/backend/hostgw/hostgw.go

@@ -22,9 +22,9 @@ import (
 
 	"sync"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
 	"github.com/vishvananda/netlink"
 	"golang.org/x/net/context"
 )
@@ -50,7 +50,7 @@ func New(sm subnet.Manager, extIface *backend.ExternalInterface) (backend.Backen
 	return be, nil
 }
 
-func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 	n := &backend.RouteNetwork{
 		SimpleNetwork: backend.SimpleNetwork{
 			ExtIface: be.extIface,

vendor/github.com/coreos/flannel/backend/hostgw/hostgw_windows.go → vendor/github.com/flannel-io/flannel/backend/hostgw/hostgw_windows.go

@@ -16,22 +16,20 @@ package hostgw
 
 import (
 	"fmt"
-	"strconv"
+	"strings"
 	"sync"
 	"time"
 
 	"github.com/Microsoft/hcsshim"
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/routing"
+	"github.com/flannel-io/flannel/subnet"
 	"github.com/pkg/errors"
-	"github.com/rakelkar/gonetsh/netroute"
-	"github.com/rakelkar/gonetsh/netsh"
 	"golang.org/x/net/context"
 	"k8s.io/apimachinery/pkg/util/json"
 	"k8s.io/apimachinery/pkg/util/wait"
 	log "k8s.io/klog"
-	utilexec "k8s.io/utils/exec"
 )
 
 func init() {
@@ -56,7 +54,7 @@ func New(sm subnet.Manager, extIface *backend.ExternalInterface) (backend.Backen
 	return be, nil
 }
 
-func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 	// 1. Parse configuration
 	cfg := struct {
 		Name          string
@@ -81,11 +79,11 @@ func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 		Mtu:         be.extIface.Iface.MTU,
 		LinkIndex:   be.extIface.Iface.Index,
 	}
-	n.GetRoute = func(lease *subnet.Lease) *netroute.Route {
-		return &netroute.Route{
+	n.GetRoute = func(lease *subnet.Lease) *routing.Route {
+		return &routing.Route{
 			DestinationSubnet: lease.Subnet.ToIPNet(),
 			GatewayAddress:    lease.Attrs.PublicIP.ToIP(),
-			LinkIndex:         n.LinkIndex,
+			InterfaceIndex:    n.LinkIndex,
 		}
 	}
 
@@ -108,7 +106,6 @@ func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 	}
 
 	// 3. Check if the network exists and has the expected settings
-	netshHelper := netsh.New(utilexec.New())
 	createNewNetwork := true
 	expectedSubnet := n.SubnetLease.Subnet
 	expectedAddressPrefix := expectedSubnet.String()
@@ -162,18 +159,28 @@ func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 
 		// Wait for the network to populate Management IP
 		log.Infof("Waiting to get ManagementIP from HNSNetwork %s", networkName)
+		var newNetworkID = newNetwork.Id
 		waitErr = wait.Poll(500*time.Millisecond, 30*time.Second, func() (done bool, err error) {
-			newNetwork, lastErr = hcsshim.HNSNetworkRequest("GET", newNetwork.Id, "")
+			newNetwork, lastErr = hcsshim.HNSNetworkRequest("GET", newNetworkID, "")
 			return newNetwork != nil && len(newNetwork.ManagementIP) != 0, nil
 		})
 		if waitErr == wait.ErrWaitTimeout {
+			// Do not swallow the root cause
+			if lastErr != nil {
+				waitErr = lastErr
+			}
 			return nil, errors.Wrapf(waitErr, "timeout, failed to get management IP from HNSNetwork %s", networkName)
 		}
 
 		// Wait for the interface with the management IP
 		log.Infof("Waiting to get net interface for HNSNetwork %s (%s)", networkName, newNetwork.ManagementIP)
+		managementIP, err := ip.ParseIP4(newNetwork.ManagementIP)
+		if err != nil {
+			return nil, errors.Wrapf(err, "Failed to parse management ip (%s)", newNetwork.ManagementIP)
+		}
+
 		waitErr = wait.Poll(500*time.Millisecond, 5*time.Second, func() (done bool, err error) {
-			_, lastErr = netshHelper.GetInterfaceByIP(newNetwork.ManagementIP)
+			_, lastErr = ip.GetInterfaceByIP(managementIP.ToIP())
 			return lastErr == nil, nil
 		})
 		if waitErr == wait.ErrWaitTimeout {
@@ -221,7 +228,15 @@ func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 	log.Infof("Waiting to attach bridge endpoint %s to host", bridgeEndpointName)
 	waitErr = wait.Poll(500*time.Millisecond, 5*time.Second, func() (done bool, err error) {
 		lastErr = expectedBridgeEndpoint.HostAttach(1)
-		return lastErr == nil, nil
+		if lastErr == nil {
+			return true, nil
+		}
+		// See https://github.com/flannel-io/flannel/issues/1391 and
+		// hcsshim lacks some validations to detect the error, so we judge it by error message.
+		if strings.Contains(lastErr.Error(), "This endpoint is already attached to the switch.") {
+			return true, nil
+		}
+		return false, nil
 	})
 	if waitErr == wait.ErrWaitTimeout {
 		return nil, errors.Wrapf(lastErr, "failed to hot attach bridge HNSEndpoint %s to host compartment", bridgeEndpointName)
@@ -230,23 +245,27 @@ func (be *HostgwBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 
 	// 7. Enable forwarding on the host interface and endpoint
 	for _, interfaceIpAddress := range []string{expectedNetwork.ManagementIP, expectedBridgeEndpoint.IPAddress.String()} {
-		netInterface, err := netshHelper.GetInterfaceByIP(interfaceIpAddress)
+		ipv4, err := ip.ParseIP4(interfaceIpAddress)
+		if err != nil {
+			return nil, errors.Wrapf(err, "Failed to parse expected net interface ip (%s)", interfaceIpAddress)
+		}
+
+		netInterface, err := ip.GetInterfaceByIP(ipv4.ToIP())
 		if err != nil {
 			return nil, errors.Wrapf(err, "failed to find interface for IP Address %s", interfaceIpAddress)
 		}
 		log.Infof("Found %+v interface with IP %s", netInterface, interfaceIpAddress)
 
 		// When a new hns network is created, the interface is modified, esp the name, index
-		if expectedNetwork.ManagementIP == netInterface.IpAddress {
-			n.LinkIndex = netInterface.Idx
+		if expectedNetwork.ManagementIP == ipv4.String() {
+			n.LinkIndex = netInterface.Index
 			n.Name = netInterface.Name
 		}
 
-		interfaceIdx := strconv.Itoa(netInterface.Idx)
-		if err := netshHelper.EnableForwarding(interfaceIdx); err != nil {
-			return nil, errors.Wrapf(err, "failed to enable forwarding on %s index %s", netInterface.Name, interfaceIdx)
+		if err := ip.EnableForwardingForInterface(netInterface); err != nil {
+			return nil, errors.Wrapf(err, "failed to enable forwarding on %s index %d", netInterface.Name, netInterface.Index)
 		}
-		log.Infof("Enabled forwarding on %s index %s", netInterface.Name, interfaceIdx)
+		log.Infof("Enabled forwarding on %s index %d", netInterface.Name, netInterface.Index)
 	}
 
 	return n, nil

vendor/github.com/coreos/flannel/backend/ipsec/handle_charon.go → vendor/github.com/flannel-io/flannel/backend/ipsec/handle_charon.go

@@ -26,9 +26,9 @@ import (
 	"time"
 
 	"github.com/bronze1man/goStrongswanVici"
-	"github.com/coreos/flannel/subnet"
-	log "k8s.io/klog"
+	"github.com/flannel-io/flannel/subnet"
 	"golang.org/x/net/context"
+	log "k8s.io/klog"
 )
 
 type Uri struct {
@@ -41,15 +41,19 @@ type CharonIKEDaemon struct {
 	ctx         context.Context
 }
 
-func NewCharonIKEDaemon(ctx context.Context, wg sync.WaitGroup, espProposal string) (*CharonIKEDaemon, error) {
-
+func NewCharonIKEDaemon(ctx context.Context, wg *sync.WaitGroup, espProposal string) (*CharonIKEDaemon, error) {
 	charon := &CharonIKEDaemon{ctx: ctx, espProposal: espProposal}
 
 	addr := strings.Split("unix:///var/run/charon.vici", "://")
 	charon.viciUri = Uri{addr[0], addr[1]}
 
-	cmd, err := charon.runBundled("/usr/lib/strongswan/", "charon")
+	execPath, err := findExecPath()
+	if err != nil {
+		log.Errorf("Charon daemon not found: %v", err)
+		return nil, err
+	}
 
+	cmd, err := charon.run(execPath)
 	if err != nil {
 		log.Errorf("Error starting charon daemon: %v", err)
 		return nil, err
@@ -93,13 +97,9 @@ func (charon *CharonIKEDaemon) getClient(wait bool) (client *goStrongswanVici.Cl
 	}
 }
 
-func (charon *CharonIKEDaemon) runBundled(staticLocation string, command string) (cmd *exec.Cmd, err error) {
-	path, err := exec.LookPath(command)
-	if err != nil {
-		path = staticLocation + command
-	}
+func (charon *CharonIKEDaemon) run(execPath string) (cmd *exec.Cmd, err error) {
 	cmd = &exec.Cmd{
-		Path: path,
+		Path: execPath,
 		SysProcAttr: &syscall.SysProcAttr{
 			Pdeathsig: syscall.SIGTERM,
 		},
@@ -234,3 +234,25 @@ func formatConnectionName(localLease, remoteLease *subnet.Lease) string {
 func formatChildSAConfName(localLease, remoteLease *subnet.Lease) string {
 	return fmt.Sprintf("%s-%s", localLease.Subnet, remoteLease.Subnet)
 }
+
+func findExecPath() (string, error) {
+	// try well known charon paths
+	paths := []string{
+		"charon",                         // PATH
+		"/usr/lib/strongswan/charon",     // alpine, arch, flannel container
+		"/usr/lib/ipsec/charon",          // debian/ubuntu
+		"/usr/libexec/strongswan/charon", // centos/rhel
+		"/usr/libexec/ipsec/charon",      // opensuse/sles
+	}
+	for _, path := range paths {
+		path, err := exec.LookPath(path)
+		if err != nil {
+			log.Warningf("No valid charon executable found at path %s: %v", path, err)
+			continue
+		}
+		return path, nil
+	}
+
+	err := fmt.Errorf("No valid charon executable found at paths %v", paths)
+	return "", err
+}

vendor/github.com/coreos/flannel/backend/ipsec/handle_xfrm.go → vendor/github.com/flannel-io/flannel/backend/ipsec/handle_xfrm.go

@@ -16,13 +16,14 @@
 package ipsec
 
 import (
+	"errors"
 	"fmt"
 	"net"
+	"syscall"
 
-	log "k8s.io/klog"
+	"github.com/flannel-io/flannel/subnet"
 	"github.com/vishvananda/netlink"
-
-	"github.com/coreos/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 func AddXFRMPolicy(myLease, remoteLease *subnet.Lease, dir netlink.Dir, reqID int) error {
@@ -30,7 +31,7 @@ func AddXFRMPolicy(myLease, remoteLease *subnet.Lease, dir netlink.Dir, reqID in
 
 	dst := remoteLease.Subnet.ToIPNet()
 
-	policy := netlink.XfrmPolicy{
+	policy := &netlink.XfrmPolicy{
 		Src: src,
 		Dst: dst,
 		Dir: dir,
@@ -47,14 +48,23 @@ func AddXFRMPolicy(myLease, remoteLease *subnet.Lease, dir netlink.Dir, reqID in
 		Reqid: reqID,
 	}
 
-	log.Infof("Adding ipsec policy: %+v", tmpl)
-
 	policy.Tmpls = append(policy.Tmpls, tmpl)
 
-	if err := netlink.XfrmPolicyAdd(&policy); err != nil {
-		return fmt.Errorf("error adding policy: %+v err: %v", policy, err)
+	if existingPolicy, err := netlink.XfrmPolicyGet(policy); err != nil {
+		if errors.Is(err, syscall.ENOENT) {
+			log.Infof("Adding ipsec policy: %+v", tmpl)
+			if err := netlink.XfrmPolicyAdd(policy); err != nil {
+				return fmt.Errorf("error adding policy: %+v err: %v", policy, err)
+			}
+		} else {
+			return fmt.Errorf("error getting policy: %+v err: %v", policy, err)
+		}
+	} else {
+		log.Infof("Updating ipsec policy %+v with %+v", existingPolicy, policy)
+		if err := netlink.XfrmPolicyUpdate(policy); err != nil {
+			return fmt.Errorf("error updating policy: %+v err: %v", policy, err)
+		}
 	}
-
 	return nil
 }
 

vendor/github.com/coreos/flannel/backend/ipsec/ipsec.go → vendor/github.com/flannel-io/flannel/backend/ipsec/ipsec.go

@@ -20,21 +20,21 @@ import (
 	"fmt"
 	"sync"
 
-	log "k8s.io/klog"
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 /*
 	Flannel's approach to IPSec uses Strongswan to handle the key exchange (using IKEv2) and the kernel to handle the
 	actual encryption.
 
-	Strongswan's "charon" is bundled in the flannel container. Flannel runs it as a child process when the ipsec backend
-	is selected and communicates with it using the "VICI" interface. Strongswan ships a utility "swanctl" which also
-	uses the VICI interface. This utility is bundled in the flannel container and can help with debugging.
+	Flannel runs Strongswan's "charon" as a child process when the ipsec backend is selected and communicates with it
+	using the "VICI" interface. Strongswan ships a utility "swanctl" which also uses the VICI interface. This utility
+	is bundled in the flannel container and can help with debugging.
 
 	The file "handle_charon.go" contains the logic for working with the charon. It supports creating a "CharonIKEDaemon"
 	which supports loading the PSK into the charon and adding and removing connections.
@@ -70,7 +70,7 @@ func New(sm subnet.Manager, extIface *backend.ExternalInterface) (
 }
 
 func (be *IPSECBackend) RegisterNetwork(
-	ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+	ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 
 	cfg := struct {
 		UDPEncap    bool

vendor/github.com/coreos/flannel/backend/ipsec/ipsec_network.go → vendor/github.com/flannel-io/flannel/backend/ipsec/ipsec_network.go

@@ -21,12 +21,11 @@ import (
 	"strconv"
 	"sync"
 
-	log "k8s.io/klog"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/subnet"
 	"github.com/vishvananda/netlink"
 	"golang.org/x/net/context"
-
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 const (
@@ -95,12 +94,13 @@ func (n *network) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtsBatch := <-evts:
+		case evtsBatch, ok := <-evts:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			log.Info("Handling event")
 			n.handleSubnetEvents(evtsBatch)
-		case <-ctx.Done():
-			log.Info("Received DONE")
-			return
 		}
 	}
 }

vendor/github.com/coreos/flannel/backend/manager.go → vendor/github.com/flannel-io/flannel/backend/manager.go

@@ -21,7 +21,7 @@ import (
 
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/subnet"
 )
 
 var constructors = make(map[string]BackendCtor)

vendor/github.com/coreos/flannel/backend/route_network.go → vendor/github.com/flannel-io/flannel/backend/route_network.go

@@ -22,11 +22,11 @@ import (
 	"sync"
 	"time"
 
-	log "k8s.io/klog"
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/subnet"
 	"github.com/vishvananda/netlink"
+	log "k8s.io/klog"
 )
 
 const (
@@ -69,11 +69,12 @@ func (n *RouteNetwork) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtBatch := <-evts:
+		case evtBatch, ok := <-evts:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			n.handleSubnetEvents(evtBatch)
-
-		case <-ctx.Done():
-			return
 		}
 	}
 }

vendor/github.com/coreos/flannel/backend/route_network_windows.go → vendor/github.com/flannel-io/flannel/backend/route_network_windows.go

@@ -15,15 +15,15 @@
 package backend
 
 import (
+	"strings"
 	"sync"
 	"time"
 
-	log "k8s.io/klog"
-	"github.com/rakelkar/gonetsh/netroute"
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/subnet"
-	"strings"
+	"github.com/flannel-io/flannel/pkg/routing"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 const (
@@ -35,10 +35,10 @@ type RouteNetwork struct {
 	Name        string
 	BackendType string
 	SM          subnet.Manager
-	GetRoute    func(lease *subnet.Lease) *netroute.Route
+	GetRoute    func(lease *subnet.Lease) *routing.Route
 	Mtu         int
 	LinkIndex   int
-	routes      []netroute.Route
+	routes      []routing.Route
 }
 
 func (n *RouteNetwork) MTU() int {
@@ -56,7 +56,7 @@ func (n *RouteNetwork) Run(ctx context.Context) {
 		wg.Done()
 	}()
 
-	n.routes = make([]netroute.Route, 0, 10)
+	n.routes = make([]routing.Route, 0, 10)
 	wg.Add(1)
 	go func() {
 		n.routeCheck(ctx)
@@ -67,17 +67,18 @@ func (n *RouteNetwork) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtBatch := <-evts:
+		case evtBatch, ok := <-evts:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			n.handleSubnetEvents(evtBatch)
-
-		case <-ctx.Done():
-			return
 		}
 	}
 }
 
 func (n *RouteNetwork) handleSubnetEvents(batch []subnet.Event) {
-	netrouteHelper := netroute.New()
+	router := routing.RouterWindows{}
 
 	for _, evt := range batch {
 		leaseSubnet := evt.Lease.Subnet
@@ -93,7 +94,7 @@ func (n *RouteNetwork) handleSubnetEvents(batch []subnet.Event) {
 		case subnet.EventAdded:
 			log.Infof("Subnet added: %v via %v", leaseSubnet, leaseAttrs.PublicIP)
 
-			existingRoutes, _ := netrouteHelper.GetNetRoutes(expectedRoute.LinkIndex, expectedRoute.DestinationSubnet)
+			existingRoutes, _ := router.GetRoutesFromInterfaceToSubnet(expectedRoute.InterfaceIndex, expectedRoute.DestinationSubnet)
 			if len(existingRoutes) > 0 {
 				existingRoute := existingRoutes[0]
 				if existingRoute.Equal(*expectedRoute) {
@@ -101,14 +102,14 @@ func (n *RouteNetwork) handleSubnetEvents(batch []subnet.Event) {
 				}
 
 				log.Warningf("Replacing existing route %v via %v with %v via %v", leaseSubnet, existingRoute.GatewayAddress, leaseSubnet, leaseAttrs.PublicIP)
-				err := netrouteHelper.RemoveNetRoute(existingRoute.LinkIndex, existingRoute.DestinationSubnet, existingRoute.GatewayAddress)
+				err := router.DeleteRoute(existingRoute.InterfaceIndex, existingRoute.DestinationSubnet, existingRoute.GatewayAddress)
 				if err != nil {
 					log.Errorf("Error removing route: %v", err)
 					continue
 				}
 			}
 
-			err := netrouteHelper.NewNetRoute(expectedRoute.LinkIndex, expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress)
+			err := router.CreateRoute(expectedRoute.InterfaceIndex, expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress)
 			if err != nil {
 				log.Errorf("Error creating route: %v", err)
 				continue
@@ -119,13 +120,13 @@ func (n *RouteNetwork) handleSubnetEvents(batch []subnet.Event) {
 		case subnet.EventRemoved:
 			log.Infof("Subnet removed: %v", leaseSubnet)
 
-			existingRoutes, _ := netrouteHelper.GetNetRoutes(expectedRoute.LinkIndex, expectedRoute.DestinationSubnet)
+			existingRoutes, _ := router.GetRoutesFromInterfaceToSubnet(expectedRoute.InterfaceIndex, expectedRoute.DestinationSubnet)
 			if len(existingRoutes) > 0 {
 				existingRoute := existingRoutes[0]
 				if existingRoute.Equal(*expectedRoute) {
 					log.Infof("Removing existing route %v via %v", leaseSubnet, existingRoute.GatewayAddress)
 
-					err := netrouteHelper.RemoveNetRoute(existingRoute.LinkIndex, existingRoute.DestinationSubnet, existingRoute.GatewayAddress)
+					err := router.DeleteRoute(existingRoute.InterfaceIndex, existingRoute.DestinationSubnet, existingRoute.GatewayAddress)
 					if err != nil {
 						log.Warningf("Error removing route: %v", err)
 					}
@@ -140,7 +141,7 @@ func (n *RouteNetwork) handleSubnetEvents(batch []subnet.Event) {
 	}
 }
 
-func (n *RouteNetwork) addToRouteList(newRoute *netroute.Route) {
+func (n *RouteNetwork) addToRouteList(newRoute *routing.Route) {
 	for _, route := range n.routes {
 		if route.Equal(*newRoute) {
 			return
@@ -150,7 +151,7 @@ func (n *RouteNetwork) addToRouteList(newRoute *netroute.Route) {
 	n.routes = append(n.routes, *newRoute)
 }
 
-func (n *RouteNetwork) removeFromRouteList(oldRoute *netroute.Route) {
+func (n *RouteNetwork) removeFromRouteList(oldRoute *routing.Route) {
 	for index, route := range n.routes {
 		if route.Equal(*oldRoute) {
 			n.routes = append(n.routes[:index], n.routes[index+1:]...)
@@ -171,9 +172,9 @@ func (n *RouteNetwork) routeCheck(ctx context.Context) {
 }
 
 func (n *RouteNetwork) checkSubnetExistInRoutes() {
-	netrouteHelper := netroute.New()
+	router := routing.RouterWindows{}
 
-	existingRoutes, err := netrouteHelper.GetNetRoutesAll()
+	existingRoutes, err := router.GetAllRoutes()
 	if err != nil {
 		log.Errorf("Error enumerating routes: %v", err)
 		return
@@ -188,12 +189,12 @@ func (n *RouteNetwork) checkSubnetExistInRoutes() {
 		}
 
 		if !exist {
-			err := netrouteHelper.NewNetRoute(expectedRoute.LinkIndex, expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress)
+			err := router.CreateRoute(expectedRoute.InterfaceIndex, expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress)
 			if err != nil {
-				log.Warningf("Error recovering route to %v via %v on %v (%v).", expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress, expectedRoute.LinkIndex, err)
+				log.Warningf("Error recovering route to %v via %v on %v (%v).", expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress, expectedRoute.InterfaceIndex, err)
 				continue
 			}
-			log.Infof("Recovered route to %v via %v on %v.", expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress, expectedRoute.LinkIndex)
+			log.Infof("Recovered route to %v via %v on %v.", expectedRoute.DestinationSubnet, expectedRoute.GatewayAddress, expectedRoute.InterfaceIndex)
 		}
 	}
 }

vendor/github.com/coreos/flannel/backend/simple_network.go → vendor/github.com/flannel-io/flannel/backend/simple_network.go

@@ -17,7 +17,7 @@ package backend
 import (
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/subnet"
 )
 
 type SimpleNetwork struct {

vendor/github.com/coreos/flannel/backend/vxlan/device.go → vendor/github.com/flannel-io/flannel/backend/vxlan/device.go

@@ -13,7 +13,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-// +build !windows
 
 package vxlan
 
@@ -22,10 +21,11 @@ import (
 	"net"
 	"syscall"
 
-	log "k8s.io/klog"
+	"github.com/containernetworking/plugins/pkg/utils/sysctl"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/mac"
 	"github.com/vishvananda/netlink"
-
-	"github.com/coreos/flannel/pkg/ip"
+	log "k8s.io/klog"
 )
 
 type vxlanDeviceAttrs struct {
@@ -44,9 +44,15 @@ type vxlanDevice struct {
 }
 
 func newVXLANDevice(devAttrs *vxlanDeviceAttrs) (*vxlanDevice, error) {
+	hardwareAddr, err := mac.NewHardwareAddr()
+	if err != nil {
+		return nil, err
+	}
+
 	link := &netlink.Vxlan{
 		LinkAttrs: netlink.LinkAttrs{
-			Name: devAttrs.name,
+			Name:         devAttrs.name,
+			HardwareAddr: hardwareAddr,
 		},
 		VxlanId:      int(devAttrs.vni),
 		VtepDevIndex: devAttrs.vtepIndex,
@@ -56,10 +62,13 @@ func newVXLANDevice(devAttrs *vxlanDeviceAttrs) (*vxlanDevice, error) {
 		GBP:          devAttrs.gbp,
 	}
 
-	link, err := ensureLink(link)
+	link, err = ensureLink(link)
 	if err != nil {
 		return nil, err
 	}
+
+	_, _ = sysctl.Sysctl(fmt.Sprintf("net/ipv6/conf/%s/accept_ra", devAttrs.name), "0")
+
 	return &vxlanDevice{
 		link: link,
 	}, nil
@@ -109,8 +118,8 @@ func ensureLink(vxlan *netlink.Vxlan) (*netlink.Vxlan, error) {
 	return vxlan, nil
 }
 
-func (dev *vxlanDevice) Configure(ipn ip.IP4Net) error {
-	if err := ip.EnsureV4AddressOnLink(ipn, dev.link); err != nil {
+func (dev *vxlanDevice) Configure(ipa ip.IP4Net, flannelnet ip.IP4Net) error {
+	if err := ip.EnsureV4AddressOnLink(ipa, flannelnet, dev.link); err != nil {
 		return fmt.Errorf("failed to ensure address of interface %s: %s", dev.link.Attrs().Name, err)
 	}
 

vendor/github.com/coreos/flannel/backend/vxlan/device_windows.go → vendor/github.com/flannel-io/flannel/backend/vxlan/device_windows.go

@@ -11,6 +11,7 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
+// +build windows
 
 package vxlan
 
@@ -19,12 +20,10 @@ import (
 	"time"
 
 	"github.com/Microsoft/hcsshim/hcn"
-	"github.com/coreos/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/ip"
 	"github.com/pkg/errors"
-	"github.com/rakelkar/gonetsh/netsh"
 	"k8s.io/apimachinery/pkg/util/wait"
 	log "k8s.io/klog"
-	utilexec "k8s.io/utils/exec"
 )
 
 type vxlanDeviceAttrs struct {
@@ -123,20 +122,29 @@ func ensureNetwork(expectedNetwork *hcn.HostComputeNetwork, expectedAddressPrefi
 		var waitErr, lastErr error
 		// Wait for the network to populate Management IP
 		log.Infof("Waiting to get ManagementIP from HostComputeNetwork %s", networkName)
+		var newNetworkID = newNetwork.Id
 		waitErr = wait.Poll(500*time.Millisecond, 5*time.Second, func() (done bool, err error) {
-			newNetwork, lastErr = hcn.GetNetworkByID(newNetwork.Id)
+			newNetwork, lastErr = hcn.GetNetworkByID(newNetworkID)
 			return newNetwork != nil && len(getManagementIP(newNetwork)) != 0, nil
 		})
 		if waitErr == wait.ErrWaitTimeout {
+			// Do not swallow the root cause
+			if lastErr != nil {
+				waitErr = lastErr
+			}
 			return nil, errors.Wrapf(lastErr, "timeout, failed to get management IP from HostComputeNetwork %s", networkName)
 		}
 
 		managementIP := getManagementIP(newNetwork)
 		// Wait for the interface with the management IP
-		netshHelper := netsh.New(utilexec.New())
 		log.Infof("Waiting to get net interface for HostComputeNetwork %s (%s)", networkName, managementIP)
+		managementIPv4, err := ip.ParseIP4(managementIP)
+		if err != nil {
+			return nil, errors.Wrapf(err, "Failed to parse management ip (%s)", managementIP)
+		}
+
 		waitErr = wait.Poll(500*time.Millisecond, 5*time.Second, func() (done bool, err error) {
-			_, lastErr = netshHelper.GetInterfaceByIP(managementIP)
+			_, lastErr = ip.GetInterfaceByIP(managementIPv4.ToIP())
 			return lastErr == nil, nil
 		})
 		if waitErr == wait.ErrWaitTimeout {

vendor/github.com/coreos/flannel/backend/vxlan/vxlan.go → vendor/github.com/flannel-io/flannel/backend/vxlan/vxlan.go

@@ -55,15 +55,15 @@ package vxlan
 import (
 	"encoding/json"
 	"fmt"
-	log "k8s.io/klog"
 	"net"
 	"sync"
 
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 func init() {
@@ -88,8 +88,10 @@ func New(sm subnet.Manager, extIface *backend.ExternalInterface) (backend.Backen
 	return backend, nil
 }
 
-func newSubnetAttrs(publicIP net.IP, mac net.HardwareAddr) (*subnet.LeaseAttrs, error) {
-	data, err := json.Marshal(&vxlanLeaseAttrs{hardwareAddr(mac)})
+func newSubnetAttrs(publicIP net.IP, vnid uint16, mac net.HardwareAddr) (*subnet.LeaseAttrs, error) {
+	data, err := json.Marshal(&vxlanLeaseAttrs{
+		VNI:     vnid,
+		VtepMAC: hardwareAddr(mac)})
 	if err != nil {
 		return nil, err
 	}
@@ -101,7 +103,7 @@ func newSubnetAttrs(publicIP net.IP, mac net.HardwareAddr) (*subnet.LeaseAttrs,
 	}, nil
 }
 
-func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 	// Parse our configuration
 	cfg := struct {
 		VNI           int
@@ -136,7 +138,7 @@ func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 	}
 	dev.directRouting = cfg.DirectRouting
 
-	subnetAttrs, err := newSubnetAttrs(be.extIface.ExtAddr, dev.MACAddr())
+	subnetAttrs, err := newSubnetAttrs(be.extIface.ExtAddr, uint16(cfg.VNI), dev.MACAddr())
 	if err != nil {
 		return nil, err
 	}
@@ -153,7 +155,7 @@ func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 	// Ensure that the device has a /32 address so that no broadcast routes are created.
 	// This IP is just used as a source address for host to workload traffic (so
 	// the return path for the traffic has an address on the flannel network to use as the destination)
-	if err := dev.Configure(ip.IP4Net{IP: lease.Subnet.IP, PrefixLen: 32}); err != nil {
+	if err := dev.Configure(ip.IP4Net{IP: lease.Subnet.IP, PrefixLen: 32}, config.Network); err != nil {
 		return nil, fmt.Errorf("failed to configure interface %s: %s", dev.link.Attrs().Name, err)
 	}
 

vendor/github.com/coreos/flannel/backend/vxlan/vxlan_network.go → vendor/github.com/flannel-io/flannel/backend/vxlan/vxlan_network.go

@@ -19,16 +19,15 @@ import (
 	"encoding/json"
 	"net"
 	"sync"
+	"syscall"
 
-	log "k8s.io/klog"
-	"github.com/vishvananda/netlink"
 	"golang.org/x/net/context"
 
-	"syscall"
-
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	"github.com/vishvananda/netlink"
+	log "k8s.io/klog"
 )
 
 type network struct {
@@ -70,11 +69,12 @@ func (nw *network) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtBatch := <-events:
+		case evtBatch, ok := <-events:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			nw.handleSubnetEvents(evtBatch)
-
-		case <-ctx.Done():
-			return
 		}
 	}
 }
@@ -84,6 +84,7 @@ func (nw *network) MTU() int {
 }
 
 type vxlanLeaseAttrs struct {
+	VNI     uint16
 	VtepMAC hardwareAddr
 }
 

vendor/github.com/coreos/flannel/backend/vxlan/vxlan_network_windows.go → vendor/github.com/flannel-io/flannel/backend/vxlan/vxlan_network_windows.go

@@ -15,18 +15,18 @@
 package vxlan
 
 import (
-	log "k8s.io/klog"
-	"golang.org/x/net/context"
+	"encoding/json"
+	"net"
+	"strings"
 	"sync"
 
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/subnet"
+	"golang.org/x/net/context"
 
-	"encoding/json"
 	"github.com/Microsoft/hcsshim/hcn"
-	"github.com/coreos/flannel/pkg/ip"
-	"net"
-	"strings"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 type network struct {
@@ -73,11 +73,12 @@ func (nw *network) Run(ctx context.Context) {
 
 	for {
 		select {
-		case evtBatch := <-events:
+		case evtBatch, ok := <-events:
+			if !ok {
+				log.Infof("evts chan closed")
+				return
+			}
 			nw.handleSubnetEvents(evtBatch)
-
-		case <-ctx.Done():
-			return
 		}
 	}
 }
@@ -101,6 +102,11 @@ func (nw *network) handleSubnetEvents(batch []subnet.Event) {
 			continue
 		}
 
+		if vxlanAttrs.VNI < 4096 {
+			log.Error("VNI is required to greater than or equal to 4096 on Windows.")
+			continue
+		}
+
 		hnsnetwork, err := hcn.GetNetworkByName(nw.dev.link.Name)
 		if err != nil {
 			log.Errorf("Unable to find network %v, error: %v", nw.dev.link.Name, err)
@@ -109,7 +115,7 @@ func (nw *network) handleSubnetEvents(batch []subnet.Event) {
 		managementIp := event.Lease.Attrs.PublicIP.String()
 
 		networkPolicySettings := hcn.RemoteSubnetRoutePolicySetting{
-			IsolationId:                 4096,
+			IsolationId:                 vxlanAttrs.VNI,
 			DistributedRouterMacAddress: net.HardwareAddr(vxlanAttrs.VtepMAC).String(),
 			ProviderAddress:             managementIp,
 			DestinationPrefix:           event.Lease.Subnet.String(),

vendor/github.com/coreos/flannel/backend/vxlan/vxlan_windows.go → vendor/github.com/flannel-io/flannel/backend/vxlan/vxlan_windows.go

@@ -27,17 +27,16 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"net"
 	"sync"
 
-	log "k8s.io/klog"
-
 	"golang.org/x/net/context"
 
 	"github.com/Microsoft/hcsshim/hcn"
-	"github.com/coreos/flannel/backend"
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
-	"net"
+	"github.com/flannel-io/flannel/backend"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 func init() {
@@ -84,7 +83,7 @@ func newSubnetAttrs(publicIP net.IP, vnid uint16, mac net.HardwareAddr) (*subnet
 	}, nil
 }
 
-func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
+func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg *sync.WaitGroup, config *subnet.Config) (backend.Network, error) {
 	// 1. Parse configuration
 	cfg := struct {
 		Name          string
@@ -191,7 +190,10 @@ func (be *VXLANBackend) RegisterNetwork(ctx context.Context, wg sync.WaitGroup,
 	}
 
 	lease, err = be.subnetMgr.AcquireLease(ctx, subnetAttrs)
-
+	if err != nil {
+		return nil, err
+	}
+	network.SubnetLease = lease
 	return network, nil
 }
 

vendor/github.com/coreos/flannel/network/iptables.go → vendor/github.com/flannel-io/flannel/network/iptables.go

@@ -18,14 +18,12 @@ package network
 import (
 	"fmt"
 	"strings"
-
-	log "k8s.io/klog"
-
 	"time"
 
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
 	"github.com/coreos/go-iptables/iptables"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
+	log "k8s.io/klog"
 )
 
 type IPTables interface {
@@ -34,6 +32,11 @@ type IPTables interface {
 	Exists(table string, chain string, rulespec ...string) (bool, error)
 }
 
+type IPTablesError interface {
+	IsNotExist() bool
+	Error() string
+}
+
 type IPTablesRule struct {
 	table    string
 	chain    string
@@ -143,7 +146,9 @@ func ensureIPTables(ipt IPTables, rules []IPTablesRule) error {
 	// Otherwise, teardown all the rules and set them up again
 	// We do this because the order of the rules is important
 	log.Info("Some iptables rules are missing; deleting and recreating rules")
-	teardownIPTables(ipt, rules)
+	if err = teardownIPTables(ipt, rules); err != nil {
+		return fmt.Errorf("Error tearing down rules: %v", err)
+	}
 	if err = setupIPTables(ipt, rules); err != nil {
 		return fmt.Errorf("Error setting up rules: %v", err)
 	}
@@ -162,11 +167,23 @@ func setupIPTables(ipt IPTables, rules []IPTablesRule) error {
 	return nil
 }
 
-func teardownIPTables(ipt IPTables, rules []IPTablesRule) {
+func teardownIPTables(ipt IPTables, rules []IPTablesRule) error {
 	for _, rule := range rules {
 		log.Info("Deleting iptables rule: ", strings.Join(rule.rulespec, " "))
-		// We ignore errors here because if there's an error it's almost certainly because the rule
-		// doesn't exist, which is fine (we don't need to delete rules that don't exist)
-		ipt.Delete(rule.table, rule.chain, rule.rulespec...)
+		err := ipt.Delete(rule.table, rule.chain, rule.rulespec...)
+		if err != nil {
+			e := err.(IPTablesError)
+			// If this error is because the rule is already deleted, the message from iptables will be
+			// "Bad rule (does a matching rule exist in that chain?)". These are safe to ignore.
+			// However other errors (like EAGAIN caused by other things not respecting the xtables.lock)
+			// should halt the ensure process.  Otherwise rules can get out of order when a rule we think
+			// is deleted is actually still in the chain.
+			// This will leave the rules incomplete until the next successful reconciliation loop.
+			if !e.IsNotExist() {
+				return err
+			}
+		}
 	}
+
+	return nil
 }

vendor/github.com/coreos/flannel/network/iptables_windows.go → vendor/github.com/flannel-io/flannel/network/iptables_windows.go

@@ -15,8 +15,8 @@
 package network
 
 import (
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
 )
 
 type IPTables interface {

vendor/github.com/coreos/flannel/pkg/ip/iface.go → vendor/github.com/flannel-io/flannel/pkg/ip/iface.go

@@ -13,7 +13,6 @@
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
-// +build !windows
 
 package ip
 
@@ -24,6 +23,7 @@ import (
 	"syscall"
 
 	"github.com/vishvananda/netlink"
+	log "k8s.io/klog"
 )
 
 func getIfaceAddrs(iface *net.Interface) ([]netlink.Addr, error) {
@@ -36,7 +36,7 @@ func getIfaceAddrs(iface *net.Interface) ([]netlink.Addr, error) {
 	return netlink.AddrList(link, syscall.AF_INET)
 }
 
-func GetIfaceIP4Addr(iface *net.Interface) (net.IP, error) {
+func GetInterfaceIP4Addr(iface *net.Interface) (net.IP, error) {
 	addrs, err := getIfaceAddrs(iface)
 	if err != nil {
 		return nil, err
@@ -67,7 +67,7 @@ func GetIfaceIP4Addr(iface *net.Interface) (net.IP, error) {
 	return nil, errors.New("No IPv4 address found for given interface")
 }
 
-func GetIfaceIP4AddrMatch(iface *net.Interface, matchAddr net.IP) error {
+func GetInterfaceIP4AddrMatch(iface *net.Interface, matchAddr net.IP) error {
 	addrs, err := getIfaceAddrs(iface)
 	if err != nil {
 		return err
@@ -86,7 +86,7 @@ func GetIfaceIP4AddrMatch(iface *net.Interface, matchAddr net.IP) error {
 	return errors.New("No IPv4 address found for given interface")
 }
 
-func GetDefaultGatewayIface() (*net.Interface, error) {
+func GetDefaultGatewayInterface() (*net.Interface, error) {
 	routes, err := netlink.RouteList(nil, syscall.AF_INET)
 	if err != nil {
 		return nil, err
@@ -111,7 +111,7 @@ func GetInterfaceByIP(ip net.IP) (*net.Interface, error) {
 	}
 
 	for _, iface := range ifaces {
-		err := GetIfaceIP4AddrMatch(&iface, ip)
+		err := GetInterfaceIP4AddrMatch(&iface, ip)
 		if err == nil {
 			return &iface, nil
 		}
@@ -132,52 +132,33 @@ func DirectRouting(ip net.IP) (bool, error) {
 	return false, nil
 }
 
-func linkAddrsAndRemoveLinkLocal(link netlink.Link) ([]netlink.Addr, error) {
+// EnsureV4AddressOnLink ensures that there is only one v4 Addr on `link` within the `ipn` address space and it equals `ipa`.
+func EnsureV4AddressOnLink(ipa IP4Net, ipn IP4Net, link netlink.Link) error {
+	addr := netlink.Addr{IPNet: ipa.ToIPNet()}
 	existingAddrs, err := netlink.AddrList(link, netlink.FAMILY_V4)
 	if err != nil {
-		return nil, err
-	}
-
-	var result []netlink.Addr
-	for _, addr := range existingAddrs {
-		if addr.IP.IsLinkLocalUnicast() {
-			if err := netlink.AddrDel(link, &addr); err != nil {
-				return nil, fmt.Errorf("failed to remove IP address %s from %s: %s", addr.IP.String(), link.Attrs().Name, err)
-			}
-		} else {
-			result = append(result, addr)
-		}
-	}
-
-	return result, nil
-}
-
-// EnsureV4AddressOnLink ensures that there is only one v4 Addr on `link` and it equals `ipn`.
-// If there exist multiple addresses on link, it returns an error message to tell callers to remove additional address.
-func EnsureV4AddressOnLink(ipn IP4Net, link netlink.Link) error {
-	addr := netlink.Addr{IPNet: ipn.ToIPNet()}
-	existingAddrs, err := linkAddrsAndRemoveLinkLocal(link)
-	if err != nil {
 		return err
 	}
 
-	// flannel will never make this happen. This situation can only be caused by a user, so get them to sort it out.
-	if len(existingAddrs) > 1 {
-		return fmt.Errorf("link has incompatible addresses. Remove additional addresses and try again. %#v", link)
-	}
+	var hasAddr bool
+	for _, existingAddr := range existingAddrs {
+		if existingAddr.Equal(addr) {
+			hasAddr = true
+			continue
+		}
 
-	// If the device has an incompatible address then delete it. This can happen if the lease changes for example.
-	if len(existingAddrs) == 1 && !existingAddrs[0].Equal(addr) {
-		if err := netlink.AddrDel(link, &existingAddrs[0]); err != nil {
-			return fmt.Errorf("failed to remove IP address %s from %s: %s", ipn.String(), link.Attrs().Name, err)
+		if ipn.Contains(FromIP(existingAddr.IP)) {
+			if err := netlink.AddrDel(link, &existingAddr); err != nil {
+				return fmt.Errorf("failed to remove IP address %s from %s: %s", existingAddr.String(), link.Attrs().Name, err)
+			}
+			log.Infof("removed IP address %s from %s", existingAddr.String(), link.Attrs().Name)
 		}
-		existingAddrs = []netlink.Addr{}
 	}
 
 	// Actually add the desired address to the interface if needed.
-	if len(existingAddrs) == 0 {
+	if !hasAddr {
 		if err := netlink.AddrAdd(link, &addr); err != nil {
-			return fmt.Errorf("failed to add IP address %s to %s: %s", ipn.String(), link.Attrs().Name, err)
+			return fmt.Errorf("failed to add IP address %s to %s: %s", addr.String(), link.Attrs().Name, err)
 		}
 	}
 

vendor/github.com/flannel-io/flannel/pkg/ip/iface_windows.go

+// +build windows
+
+// Copyright 2015 flannel authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package ip
+
+import (
+	"errors"
+	"fmt"
+	"github.com/flannel-io/flannel/pkg/powershell"
+	"net"
+)
+
+// GetInterfaceIP4Addr returns the IPv4 address for the given network interface
+func GetInterfaceIP4Addr(iface *net.Interface) (net.IP, error) {
+	addrs, err := iface.Addrs()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, addr := range addrs {
+		var ip net.IP
+		switch v := addr.(type) {
+		case *net.IPAddr:
+			ip = v.IP
+		case *net.IPNet:
+			ip = v.IP
+		}
+
+		if ip != nil && ip.To4() != nil {
+			return ip, nil
+		}
+	}
+
+	return nil, errors.New("no IPv4 address found for given interface")
+}
+
+// GetDefaultGatewayInterface returns the first network interface found with a default gateway set
+func GetDefaultGatewayInterface() (*net.Interface, error) {
+	index, err := getDefaultGatewayInterfaceIndex()
+	if err != nil {
+		return nil, err
+	}
+
+	return net.InterfaceByIndex(index)
+}
+
+func getDefaultGatewayInterfaceIndex() (int, error) {
+	powerShellJsonData := struct {
+		IfIndex int `json:"ifIndex"`
+	}{-1}
+
+	err := powershell.RunCommandWithJsonResult("Get-NetRoute | Where { $_.DestinationPrefix -eq '0.0.0.0/0' } | Select-Object -Property ifIndex", &powerShellJsonData)
+	if err != nil {
+		return -1, err
+	}
+
+	if powerShellJsonData.IfIndex < 0 {
+		return -1, errors.New("unable to find default gateway interface index")
+	}
+
+	return powerShellJsonData.IfIndex, nil
+}
+
+// GetInterfaceByIP tries to get the network interface with the given ip address
+func GetInterfaceByIP(search net.IP) (*net.Interface, error) {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return nil, err
+	}
+
+	for _, i := range ifaces {
+		addrs, err := i.Addrs()
+		if err != nil {
+			return nil, err
+		}
+
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+
+			if ip != nil && ip.Equal(search) {
+				return &i, nil
+			}
+		}
+	}
+
+	return nil, errors.New("no interface with given IP found")
+}
+
+// EnableForwardingForInterface enables forwarding for given interface.
+// The process must run with elevated rights. Otherwise the function will fail with an "Access Denied" error.
+func EnableForwardingForInterface(iface *net.Interface) error {
+	return setForwardingForInterface(iface, true)
+}
+
+// DisableForwardingForInterface disables forwarding for given interface.
+// The process must run with elevated rights. Otherwise the function will fail with an "Access Denied" error.
+func DisableForwardingForInterface(iface *net.Interface) error {
+	return setForwardingForInterface(iface, false)
+}
+
+func setForwardingForInterface(iface *net.Interface, forwarding bool) error {
+	value := "Enabled"
+	if !forwarding {
+		value = "Disabled"
+	}
+
+	_, err := powershell.RunCommandf("Set-NetIPInterface -ifIndex %d -AddressFamily IPv4 -Forwarding %s", iface.Index, value)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func IsForwardingEnabledForInterface(iface *net.Interface) (bool, error) {
+	powerShellJsonData := struct {
+		Forwarding int `json:"Forwarding"`
+	}{0}
+
+	err := powershell.RunCommandWithJsonResult(fmt.Sprintf("Get-NetIPInterface -ifIndex %d -AddressFamily IPv4 | Select-Object -Property Forwarding", iface.Index), &powerShellJsonData)
+	if err != nil {
+		return false, err
+	}
+
+	return powerShellJsonData.Forwarding == 1, nil
+}

vendor/github.com/coreos/flannel/pkg/ip/ipnet.go → vendor/github.com/flannel-io/flannel/pkg/ip/ipnet.go

@@ -31,7 +31,13 @@ func FromBytes(ip []byte) IP4 {
 }
 
 func FromIP(ip net.IP) IP4 {
-	return FromBytes(ip.To4())
+	ipv4 := ip.To4()
+
+	if ipv4 == nil {
+		panic("Address is not an IPv4 address")
+	}
+
+	return FromBytes(ipv4)
 }
 
 func ParseIP4(s string) (IP4, error) {

vendor/github.com/flannel-io/flannel/pkg/mac/mac.go

+// Copyright 2021 flannel authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package mac
+
+import (
+	"crypto/rand"
+	"fmt"
+	"net"
+)
+
+// NewHardwareAddr generates a new random hardware (MAC) address, local and
+// unicast.
+func NewHardwareAddr() (net.HardwareAddr, error) {
+	hardwareAddr := make(net.HardwareAddr, 6)
+	if _, err := rand.Read(hardwareAddr); err != nil {
+		return nil, fmt.Errorf("could not generate random MAC address: %w", err)
+	}
+
+	// Ensure that address is locally administered and unicast.
+	hardwareAddr[0] = (hardwareAddr[0] & 0xfe) | 0x02
+
+	return hardwareAddr, nil
+}

vendor/github.com/flannel-io/flannel/pkg/powershell/powershell.go

+// +build windows
+
+// Copyright 2015 flannel authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package powershell
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os/exec"
+	"strings"
+)
+
+//commandWrapper ensures that exceptions are written to stdout and the powershell process exit code is -1
+const commandWrapper = `$ErrorActionPreference="Stop";try { %s } catch { Write-Host $_; os.Exit(-1) }`
+
+// RunCommand executes a given powershell command.
+//
+// When the command throws a powershell exception, RunCommand will return the exception message as error.
+func RunCommand(command string) ([]byte, error) {
+	cmd := exec.Command("powershell.exe", "-NoLogo", "-NoProfile", "-NonInteractive", "-Command", fmt.Sprintf(commandWrapper, command))
+
+	stdout, err := cmd.Output()
+	if err != nil {
+		if cmd.ProcessState.ExitCode() != 0 {
+			message := strings.TrimSpace(string(stdout))
+			return []byte{}, errors.New(message)
+		}
+
+		return []byte{}, err
+	}
+
+	return stdout, nil
+}
+
+// RunCommandf executes a given powershell command. Command argument formats according to a format specifier (See fmt.Sprintf).
+//
+// When the command throws a powershell exception, RunCommandf will return the exception message as error.
+func RunCommandf(command string, a ...interface{}) ([]byte, error) {
+	return RunCommand(fmt.Sprintf(command, a...))
+}
+
+// RunCommandWithJsonResult executes a given powershell command.
+// The command will be wrapped with ConvertTo-Json.
+//
+// You can Wrap your command with @(<cmd>) to ensure that the returned json is an array
+//
+// When the command throws a powershell exception, RunCommandf will return the exception message as error.
+func RunCommandWithJsonResult(command string, v interface{}) error {
+	wrappedCommand := fmt.Sprintf(commandWrapper, "ConvertTo-Json (%s)")
+	wrappedCommand = fmt.Sprintf(wrappedCommand, command)
+
+	stdout, err := RunCommandf(wrappedCommand)
+	if err != nil {
+		return err
+	}
+
+	err = json.Unmarshal(stdout, v)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

vendor/github.com/flannel-io/flannel/pkg/routing/router.go

+// Copyright 2015 flannel authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package routing
+
+import (
+	"bytes"
+	"net"
+)
+
+// Router manages network routes
+type Router interface {
+	// GetAllRoutes returns all existing routes
+	GetAllRoutes() ([]Route, error)
+
+	// GetRoutesFromInterfaceToSubnet returns all routes from the given Interface to the given subnet
+	GetRoutesFromInterfaceToSubnet(interfaceIndex int, destinationSubnet *net.IPNet) ([]Route, error)
+
+	// CreateRoute creates a new route
+	CreateRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error
+
+	// DeleteRoute removes an existing route
+	DeleteRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error
+}
+
+// Route present a specific route
+type Route struct {
+	InterfaceIndex    int
+	DestinationSubnet *net.IPNet
+	GatewayAddress    net.IP
+}
+
+func (r *Route) Equal(other Route) bool {
+	return r.DestinationSubnet.IP.Equal(other.DestinationSubnet.IP) && bytes.Equal(r.DestinationSubnet.Mask, other.DestinationSubnet.Mask) && r.GatewayAddress.Equal(other.GatewayAddress)
+}

vendor/github.com/flannel-io/flannel/pkg/routing/router_windows.go

+// +build windows
+
+// Copyright 2015 flannel authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package routing
+
+import (
+	"fmt"
+	"github.com/flannel-io/flannel/pkg/powershell"
+	"net"
+)
+
+// Router manages network routes on Windows OS using MSFT_NetRoute
+// See also https://docs.microsoft.com/en-us/previous-versions/windows/desktop/legacy/hh872448(v%3Dvs.85)
+type RouterWindows struct{}
+
+func (r RouterWindows) GetAllRoutes() ([]Route, error) {
+	return parseNetRoutes("@(Get-NetRoute | Select-Object -Property IfIndex,DestinationPrefix,NextHop)")
+}
+
+func (r RouterWindows) GetRoutesFromInterfaceToSubnet(interfaceIndex int, destinationSubnet *net.IPNet) ([]Route, error) {
+	return parseNetRoutes(fmt.Sprintf("@(Get-NetRoute -InterfaceIndex %d -DestinationPrefix %s | Select-Object -Property IfIndex,DestinationPrefix,NextHop)", interfaceIndex, destinationSubnet.String()))
+}
+
+func (r RouterWindows) CreateRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
+	_, err := powershell.RunCommandf("New-NetRoute -InterfaceIndex %d -DestinationPrefix %s -NextHop  %s", interfaceIndex, destinationSubnet.String(), gatewayAddress.String())
+	return err
+}
+
+func (r RouterWindows) DeleteRoute(interfaceIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
+	_, err := powershell.RunCommandf("Remove-NetRoute -InterfaceIndex %d -DestinationPrefix %s -NextHop %s -Verbose -Confirm:$false", interfaceIndex, destinationSubnet.String(), gatewayAddress.String())
+	return err
+}
+
+type winNetRoute struct {
+	IfIndex           int
+	DestinationPrefix string
+	NextHop           string
+}
+
+func parseNetRoutes(cmd string) ([]Route, error) {
+	powerShellJsonData := make([]winNetRoute, 0)
+
+	err := powershell.RunCommandWithJsonResult(cmd, &powerShellJsonData)
+	if err != nil {
+		return nil, err
+	}
+
+	routes := make([]Route, 0)
+	for _, r := range powerShellJsonData {
+		route := Route{
+			InterfaceIndex: r.IfIndex,
+		}
+
+		_, destinationSubnet, err := net.ParseCIDR(r.DestinationPrefix)
+		if err != nil {
+			continue
+		}
+		route.DestinationSubnet = destinationSubnet
+
+		gatewayAddress := net.ParseIP(r.NextHop)
+		if gatewayAddress == nil {
+			continue
+		}
+		route.GatewayAddress = gatewayAddress
+
+		routes = append(routes, route)
+	}
+
+	return routes, nil
+}

vendor/github.com/coreos/flannel/subnet/config.go → vendor/github.com/flannel-io/flannel/subnet/config.go

@@ -19,7 +19,7 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/coreos/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/ip"
 )
 
 type Config struct {

vendor/github.com/coreos/flannel/subnet/kube/kube.go → vendor/github.com/flannel-io/flannel/subnet/kube/kube.go

@@ -23,8 +23,8 @@ import (
 	"os"
 	"time"
 
-	"github.com/coreos/flannel/pkg/ip"
-	"github.com/coreos/flannel/subnet"
+	"github.com/flannel-io/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/subnet"
 	"golang.org/x/net/context"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -60,8 +60,7 @@ type kubeSubnetManager struct {
 	events         chan subnet.Event
 }
 
-func NewSubnetManager(apiUrl, kubeconfig, prefix, netConfPath string) (subnet.Manager, error) {
-
+func NewSubnetManager(ctx context.Context, apiUrl, kubeconfig, prefix, netConfPath string) (subnet.Manager, error) {
 	var cfg *rest.Config
 	var err error
 	// Try to build kubernetes config from a master url or a kubeconfig filepath. If neither masterUrl
@@ -88,7 +87,7 @@ func NewSubnetManager(apiUrl, kubeconfig, prefix, netConfPath string) (subnet.Ma
 			return nil, fmt.Errorf("env variables POD_NAME and POD_NAMESPACE must be set")
 		}
 
-		pod, err := c.CoreV1().Pods(podNamespace).Get(context.TODO(), podName, metav1.GetOptions{})
+		pod, err := c.CoreV1().Pods(podNamespace).Get(ctx, podName, metav1.GetOptions{})
 		if err != nil {
 			return nil, fmt.Errorf("error retrieving pod spec for '%s/%s': %v", podNamespace, podName, err)
 		}
@@ -108,7 +107,7 @@ func NewSubnetManager(apiUrl, kubeconfig, prefix, netConfPath string) (subnet.Ma
 		return nil, fmt.Errorf("error parsing subnet config: %s", err)
 	}
 
-	sm, err := newKubeSubnetManager(c, sc, nodeName, prefix)
+	sm, err := newKubeSubnetManager(ctx, c, sc, nodeName, prefix)
 	if err != nil {
 		return nil, fmt.Errorf("error creating network manager: %s", err)
 	}
@@ -126,7 +125,7 @@ func NewSubnetManager(apiUrl, kubeconfig, prefix, netConfPath string) (subnet.Ma
 	return sm, nil
 }
 
-func newKubeSubnetManager(c clientset.Interface, sc *subnet.Config, nodeName, prefix string) (*kubeSubnetManager, error) {
+func newKubeSubnetManager(ctx context.Context, c clientset.Interface, sc *subnet.Config, nodeName, prefix string) (*kubeSubnetManager, error) {
 	var err error
 	var ksm kubeSubnetManager
 	ksm.annotations, err = newAnnotations(prefix)
@@ -140,10 +139,10 @@ func newKubeSubnetManager(c clientset.Interface, sc *subnet.Config, nodeName, pr
 	indexer, controller := cache.NewIndexerInformer(
 		&cache.ListWatch{
 			ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
-				return ksm.client.CoreV1().Nodes().List(context.TODO(), options)
+				return ksm.client.CoreV1().Nodes().List(ctx, options)
 			},
 			WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
-				return ksm.client.CoreV1().Nodes().Watch(context.TODO(), options)
+				return ksm.client.CoreV1().Nodes().Watch(ctx, options)
 			},
 		},
 		&v1.Node{},
@@ -222,8 +221,8 @@ func (ksm *kubeSubnetManager) AcquireLease(ctx context.Context, attrs *subnet.Le
 	if err != nil {
 		return nil, err
 	}
-	n := cachedNode.DeepCopy()
 
+	n := cachedNode.DeepCopy()
 	if n.Spec.PodCIDR == "" {
 		return nil, fmt.Errorf("node %q pod cidr not assigned", ksm.nodeName)
 	}
@@ -269,12 +268,12 @@ func (ksm *kubeSubnetManager) AcquireLease(ctx context.Context, attrs *subnet.Le
 			return nil, fmt.Errorf("failed to create patch for node %q: %v", ksm.nodeName, err)
 		}
 
-		_, err = ksm.client.CoreV1().Nodes().Patch(context.TODO(), ksm.nodeName, types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}, "status")
+		_, err = ksm.client.CoreV1().Nodes().Patch(ctx, ksm.nodeName, types.StrategicMergePatchType, patchBytes, metav1.PatchOptions{}, "status")
 		if err != nil {
 			return nil, err
 		}
 	}
-	err = ksm.setNodeNetworkUnavailableFalse()
+	err = ksm.setNodeNetworkUnavailableFalse(ctx)
 	if err != nil {
 		log.Errorf("Unable to set NetworkUnavailable to False for %q: %v", ksm.nodeName, err)
 	}
@@ -292,7 +291,7 @@ func (ksm *kubeSubnetManager) WatchLeases(ctx context.Context, cursor interface{
 			Events: []subnet.Event{event},
 		}, nil
 	case <-ctx.Done():
-		return subnet.LeaseWatchResult{}, nil
+		return subnet.LeaseWatchResult{}, context.Canceled
 	}
 }
 
@@ -334,7 +333,7 @@ func (ksm *kubeSubnetManager) Name() string {
 
 // Set Kubernetes NodeNetworkUnavailable to false when starting
 // https://kubernetes.io/docs/concepts/architecture/nodes/#condition
-func (ksm *kubeSubnetManager) setNodeNetworkUnavailableFalse() error {
+func (ksm *kubeSubnetManager) setNodeNetworkUnavailableFalse(ctx context.Context) error {
 	condition := v1.NodeCondition{
 		Type:               v1.NodeNetworkUnavailable,
 		Status:             v1.ConditionFalse,
@@ -348,6 +347,6 @@ func (ksm *kubeSubnetManager) setNodeNetworkUnavailableFalse() error {
 		return err
 	}
 	patch := []byte(fmt.Sprintf(`{"status":{"conditions":%s}}`, raw))
-	_, err = ksm.client.CoreV1().Nodes().PatchStatus(context.TODO(), ksm.nodeName, patch)
+	_, err = ksm.client.CoreV1().Nodes().PatchStatus(ctx, ksm.nodeName, patch)
 	return err
 }

vendor/github.com/coreos/flannel/subnet/subnet.go → vendor/github.com/flannel-io/flannel/subnet/subnet.go

@@ -23,7 +23,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/coreos/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/ip"
 	"golang.org/x/net/context"
 )
 

vendor/github.com/coreos/flannel/subnet/watch.go → vendor/github.com/flannel-io/flannel/subnet/watch.go

@@ -17,10 +17,10 @@ package subnet
 import (
 	"time"
 
-	log "k8s.io/klog"
 	"golang.org/x/net/context"
 
-	"github.com/coreos/flannel/pkg/ip"
+	"github.com/flannel-io/flannel/pkg/ip"
+	log "k8s.io/klog"
 )
 
 // WatchLeases performs a long term watch of the given network's subnet leases
@@ -37,9 +37,15 @@ func WatchLeases(ctx context.Context, sm Manager, ownLease *Lease, receiver chan
 		res, err := sm.WatchLeases(ctx, cursor)
 		if err != nil {
 			if err == context.Canceled || err == context.DeadlineExceeded {
+				log.Infof("%v, close receiver chan", err)
+				close(receiver)
 				return
 			}
 
+			if res.Cursor != nil {
+				cursor = res.Cursor
+			}
+
 			log.Errorf("Watch subnets: %v", err)
 			time.Sleep(time.Second)
 			continue
@@ -165,10 +171,12 @@ func WatchLease(ctx context.Context, sm Manager, sn ip.IP4Net, receiver chan Eve
 		wr, err := sm.WatchLease(ctx, sn, cursor)
 		if err != nil {
 			if err == context.Canceled || err == context.DeadlineExceeded {
+				log.Infof("%v, close receiver chan", err)
+				close(receiver)
 				return
 			}
 
-			//log.Errorf("Subnet watch failed: %v", err)
+			log.Errorf("Subnet watch failed: %v", err)
 			time.Sleep(time.Second)
 			continue
 		}

vendor/github.com/k3s-io/go-powershell/LICENSE

-Copyright (c) 2017, Gorillalabs
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-
-http://www.opensource.org/licenses/MIT

vendor/github.com/k3s-io/go-powershell/backend/local.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import (
-	"io"
-	"os/exec"
-
-	"github.com/pkg/errors"
-)
-
-type Local struct{}
-
-func (b *Local) StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error) {
-	command := exec.Command(cmd, args...)
-
-	stdin, err := command.StdinPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stdin stream")
-	}
-
-	stdout, err := command.StdoutPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stdout stream")
-	}
-
-	stderr, err := command.StderrPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the PowerShell's stderr stream")
-	}
-
-	err = command.Start()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not spawn PowerShell process")
-	}
-
-	return command, stdin, stdout, stderr, nil
-}

vendor/github.com/k3s-io/go-powershell/backend/ssh.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import (
-	"fmt"
-	"io"
-	"regexp"
-	"strings"
-
-	"github.com/pkg/errors"
-)
-
-// sshSession exists so we don't create a hard dependency on crypto/ssh.
-type sshSession interface {
-	Waiter
-
-	StdinPipe() (io.WriteCloser, error)
-	StdoutPipe() (io.Reader, error)
-	StderrPipe() (io.Reader, error)
-	Start(string) error
-}
-
-type SSH struct {
-	Session sshSession
-}
-
-func (b *SSH) StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error) {
-	stdin, err := b.Session.StdinPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stdin stream")
-	}
-
-	stdout, err := b.Session.StdoutPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stdout stream")
-	}
-
-	stderr, err := b.Session.StderrPipe()
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not get hold of the SSH session's stderr stream")
-	}
-
-	err = b.Session.Start(b.createCmd(cmd, args))
-	if err != nil {
-		return nil, nil, nil, nil, errors.Wrap(err, "Could not spawn process via SSH")
-	}
-
-	return b.Session, stdin, stdout, stderr, nil
-}
-
-func (b *SSH) createCmd(cmd string, args []string) string {
-	parts := []string{cmd}
-	simple := regexp.MustCompile(`^[a-z0-9_/.~+-]+$`)
-
-	for _, arg := range args {
-		if !simple.MatchString(arg) {
-			arg = b.quote(arg)
-		}
-
-		parts = append(parts, arg)
-	}
-
-	return strings.Join(parts, " ")
-}
-
-func (b *SSH) quote(s string) string {
-	return fmt.Sprintf(`"%s"`, s)
-}

vendor/github.com/k3s-io/go-powershell/backend/types.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package backend
-
-import "io"
-
-type Waiter interface {
-	Wait() error
-}
-
-type Starter interface {
-	StartProcess(cmd string, args ...string) (Waiter, io.Writer, io.Reader, io.Reader, error)
-}

vendor/github.com/k3s-io/go-powershell/utils/quote.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package utils
-
-import "strings"
-
-func QuoteArg(s string) string {
-	return "'" + strings.Replace(s, "'", "\"", -1) + "'"
-}

vendor/github.com/k3s-io/go-powershell/utils/rand.go

-// Copyright (c) 2017 Gorillalabs. All rights reserved.
-
-package utils
-
-import (
-	"crypto/rand"
-	"encoding/hex"
-)
-
-func CreateRandomString(bytes int) string {
-	c := bytes
-	b := make([]byte, c)
-
-	_, err := rand.Read(b)
-	if err != nil {
-		panic(err)
-	}
-
-	return hex.EncodeToString(b)
-}

vendor/github.com/rakelkar/gonetsh/netroute/netroute.go

-package netroute
-
-import (
-	"bufio"
-	"bytes"
-	"net"
-	"regexp"
-	"strconv"
-	"strings"
-
-	ps "github.com/benmoss/go-powershell"
-	psbe "github.com/benmoss/go-powershell/backend"
-
-	"fmt"
-	"math/big"
-)
-
-// Interface is an injectable interface for running MSFT_NetRoute commands. Implementations must be goroutine-safe.
-type Interface interface {
-	// Get all net routes on the host
-	GetNetRoutesAll() ([]Route, error)
-
-	// Get net routes by link and destination subnet
-	GetNetRoutes(linkIndex int, destinationSubnet *net.IPNet) ([]Route, error)
-
-	// Create a new route
-	NewNetRoute(linkIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error
-
-	// Remove an existing route
-	RemoveNetRoute(linkIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error
-
-	// exit the shell
-	Exit()
-}
-
-type Route struct {
-	LinkIndex         int
-	DestinationSubnet *net.IPNet
-	GatewayAddress    net.IP
-	RouteMetric       int
-	IfMetric          int
-}
-
-type shell struct {
-	shellInstance ps.Shell
-}
-
-func New() Interface {
-
-	s, _ := ps.New(&psbe.Local{})
-
-	runner := &shell{
-		shellInstance: s,
-	}
-
-	return runner
-}
-
-func (shell *shell) Exit() {
-	shell.shellInstance.Exit()
-	shell.shellInstance = nil
-}
-
-func (shell *shell) GetNetRoutesAll() ([]Route, error) {
-	getRouteCmdLine := "get-netroute -erroraction Ignore"
-	stdout, err := shell.runScript(getRouteCmdLine)
-	if err != nil {
-		return nil, err
-	}
-	return parseRoutesList(stdout), nil
-}
-func (shell *shell) GetNetRoutes(linkIndex int, destinationSubnet *net.IPNet) ([]Route, error) {
-	getRouteCmdLine := fmt.Sprintf("get-netroute -InterfaceIndex %v -DestinationPrefix %v -erroraction Ignore", linkIndex, destinationSubnet.String())
-	stdout, err := shell.runScript(getRouteCmdLine)
-	if err != nil {
-		return nil, err
-	}
-	return parseRoutesList(stdout), nil
-}
-
-func (shell *shell) RemoveNetRoute(linkIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
-	removeRouteCmdLine := fmt.Sprintf("remove-netroute -InterfaceIndex %v -DestinationPrefix %v -NextHop  %v -Verbose -Confirm:$false", linkIndex, destinationSubnet.String(), gatewayAddress.String())
-	_, err := shell.runScript(removeRouteCmdLine)
-
-	return err
-}
-
-func (shell *shell) NewNetRoute(linkIndex int, destinationSubnet *net.IPNet, gatewayAddress net.IP) error {
-	newRouteCmdLine := fmt.Sprintf("new-netroute -InterfaceIndex %v -DestinationPrefix %v -NextHop  %v -Verbose", linkIndex, destinationSubnet.String(), gatewayAddress.String())
-	_, err := shell.runScript(newRouteCmdLine)
-
-	return err
-}
-
-func parseRoutesList(stdout string) []Route {
-	internalWhitespaceRegEx := regexp.MustCompile(`[\s\p{Zs}]{2,}`)
-	scanner := bufio.NewScanner(strings.NewReader(stdout))
-	var routes []Route
-	for scanner.Scan() {
-		line := internalWhitespaceRegEx.ReplaceAllString(scanner.Text(), "|")
-		if strings.HasPrefix(line, "ifIndex") || strings.HasPrefix(line, "----") {
-			continue
-		}
-
-		parts := strings.Split(line, "|")
-		if len(parts) != 5 {
-			continue
-		}
-
-		linkIndex, err := strconv.Atoi(parts[0])
-		if err != nil {
-			continue
-		}
-
-		gatewayAddress := net.ParseIP(parts[2])
-		if gatewayAddress == nil {
-			continue
-		}
-
-		_, destinationSubnet, err := net.ParseCIDR(parts[1])
-		if err != nil {
-			continue
-		}
-		route := Route{
-			DestinationSubnet: destinationSubnet,
-			GatewayAddress:    gatewayAddress,
-			LinkIndex:         linkIndex,
-		}
-
-		routes = append(routes, route)
-	}
-
-	return routes
-}
-
-func (r *Route) Equal(route Route) bool {
-	if r.DestinationSubnet.IP.Equal(route.DestinationSubnet.IP) && r.GatewayAddress.Equal(route.GatewayAddress) && bytes.Equal(r.DestinationSubnet.Mask, route.DestinationSubnet.Mask) {
-		return true
-	}
-
-	return false
-}
-
-func (shell *shell) runScript(cmdLine string) (string, error) {
-
-	stdout, _, err := shell.shellInstance.Execute(cmdLine)
-	if err != nil {
-		return "", err
-	}
-
-	return stdout, nil
-}
-
-func IpToInt(ip net.IP) *big.Int {
-	if v := ip.To4(); v != nil {
-		return big.NewInt(0).SetBytes(v)
-	}
-	return big.NewInt(0).SetBytes(ip.To16())
-}
-
-func IntToIP(i *big.Int) net.IP {
-	return net.IP(i.Bytes())
-}

vendor/github.com/rakelkar/gonetsh/netsh/netsh.go

-package netsh
-
-import (
-	"fmt"
-	"regexp"
-	"strconv"
-	"strings"
-	"sync"
-
-	"errors"
-
-	utilexec "k8s.io/utils/exec"
-)
-
-// Interface is an injectable interface for running netsh commands.  Implementations must be goroutine-safe.
-type Interface interface {
-	// EnsurePortProxyRule checks if the specified redirect exists, if not creates it
-	EnsurePortProxyRule(args []string) (bool, error)
-	// DeletePortProxyRule deletes the specified portproxy rule.  If the rule did not exist, return error.
-	DeletePortProxyRule(args []string) error
-	// DeleteIPAddress checks if the specified IP address is present and, if so, deletes it.
-	DeleteIPAddress(args []string) error
-	// Restore runs `netsh exec` to restore portproxy or addresses using a file.
-	// TODO Check if this is required, most likely not
-	Restore(args []string) error
-	// Get the interface name that has the default gateway
-	GetDefaultGatewayIfaceName() (string, error)
-	// Get a list of interfaces and addresses
-	GetInterfaces() ([]Ipv4Interface, error)
-	// Gets an interface by name
-	GetInterfaceByName(name string) (Ipv4Interface, error)
-	// Gets an interface by ip address in the format a.b.c.d
-	GetInterfaceByIP(ipAddr string) (Ipv4Interface, error)
-	// Enable forwarding on the interface (name or index)
-	EnableForwarding(iface string) error
-}
-
-const (
-	cmdNetsh string = "netsh"
-)
-
-// runner implements Interface in terms of exec("netsh").
-type runner struct {
-	mu   sync.Mutex
-	exec utilexec.Interface
-}
-
-// Ipv4Interface models IPv4 interface output from: netsh interface ipv4 show addresses
-type Ipv4Interface struct {
-	Idx                   int
-	Name                  string
-	InterfaceMetric       int
-	DhcpEnabled           bool
-	IpAddress             string
-	SubnetPrefix          int
-	GatewayMetric         int
-	DefaultGatewayAddress string
-}
-
-// New returns a new Interface which will exec netsh.
-func New(exec utilexec.Interface) Interface {
-
-	if exec == nil {
-		exec = utilexec.New()
-	}
-
-	runner := &runner{
-		exec: exec,
-	}
-	return runner
-}
-
-func (runner *runner) GetInterfaces() ([]Ipv4Interface, error) {
-	interfaces, interfaceError := runner.getIpAddressConfigurations()
-
-	if interfaceError != nil {
-		return nil, interfaceError
-	}
-
-	indexMap, indexError := runner.getNetworkInterfaceParameters()
-
-	if indexError != nil {
-		return nil, indexError
-	}
-
-	// zip them up
-	for i := 0; i < len(interfaces); i++ {
-		name := interfaces[i].Name
-
-		if val, ok := indexMap[name]; ok {
-			interfaces[i].Idx = val
-		} else {
-			return nil, fmt.Errorf("no index found for interface \"%v\"", name)
-		}
-	}
-
-	return interfaces, nil
-}
-
-// GetInterfaces uses the show addresses command and returns a formatted structure
-func (runner *runner) getIpAddressConfigurations() ([]Ipv4Interface, error) {
-	args := []string{
-		"interface", "ipv4", "show", "addresses",
-	}
-
-	output, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput()
-	if err != nil {
-		return nil, err
-	}
-	interfacesString := string(output[:])
-
-	outputLines := strings.Split(interfacesString, "\n")
-	var interfaces []Ipv4Interface
-	var currentInterface Ipv4Interface
-	quotedPattern := regexp.MustCompile("\\\"(.*?)\\\"")
-	cidrPattern := regexp.MustCompile("\\/(.*?)\\ ")
-
-	if err != nil {
-		return nil, err
-	}
-
-	for _, outputLine := range outputLines {
-		if strings.Contains(outputLine, "Configuration for interface") {
-			if currentInterface != (Ipv4Interface{}) {
-				interfaces = append(interfaces, currentInterface)
-			}
-			match := quotedPattern.FindStringSubmatch(outputLine)
-			currentInterface = Ipv4Interface{
-				Name: match[1],
-			}
-		} else {
-			parts := strings.SplitN(outputLine, ":", 2)
-			if len(parts) != 2 {
-				continue
-			}
-			key := strings.TrimSpace(parts[0])
-			value := strings.TrimSpace(parts[1])
-			if strings.HasPrefix(key, "DHCP enabled") {
-				if value == "Yes" {
-					currentInterface.DhcpEnabled = true
-				}
-			} else if strings.HasPrefix(key, "InterfaceMetric") {
-				if val, err := strconv.Atoi(value); err == nil {
-					currentInterface.InterfaceMetric = val
-				}
-			} else if strings.HasPrefix(key, "Gateway Metric") {
-				if val, err := strconv.Atoi(value); err == nil {
-					currentInterface.GatewayMetric = val
-				}
-			} else if strings.HasPrefix(key, "Subnet Prefix") {
-				match := cidrPattern.FindStringSubmatch(value)
-				if val, err := strconv.Atoi(match[1]); err == nil {
-					currentInterface.SubnetPrefix = val
-				}
-			} else if strings.HasPrefix(key, "IP Address") {
-				currentInterface.IpAddress = value
-			} else if strings.HasPrefix(key, "Default Gateway") {
-				currentInterface.DefaultGatewayAddress = value
-			}
-		}
-	}
-
-	// add the last one
-	if currentInterface != (Ipv4Interface{}) {
-		interfaces = append(interfaces, currentInterface)
-	}
-
-	if len(interfaces) == 0 {
-		return nil, fmt.Errorf("no interfaces found in netsh output: %v", interfacesString)
-	}
-
-	return interfaces, nil
-}
-
-func (runner *runner) getNetworkInterfaceParameters() (map[string]int, error) {
-	args := []string{
-		"interface", "ipv4", "show", "interfaces",
-	}
-
-	output, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput()
-
-	if err != nil {
-		return nil, err
-	}
-
-	// Split output by line
-	outputString := string(output[:])
-	outputString = strings.TrimSpace(outputString)
-	var outputLines = strings.Split(outputString, "\n")
-
-	if len(outputLines) < 3 {
-		return nil, errors.New("unexpected netsh output:\n" + outputString)
-	}
-
-	// Remove first two lines of header text
-	outputLines = outputLines[2:]
-
-	indexMap := make(map[string]int)
-
-	reg := regexp.MustCompile("\\s{2,}")
-
-	for _, line := range outputLines {
-
-		line = strings.TrimSpace(line)
-
-		// Split the line by two or more whitespace characters, returning all substrings (n < 0)
-		splitLine := reg.Split(line, -1)
-
-		name := splitLine[4]
-		if idx, err := strconv.Atoi(splitLine[0]); err == nil {
-			indexMap[name] = idx
-		}
-
-	}
-
-	return indexMap, nil
-}
-
-// Enable forwarding on the interface (name or index)
-func (runner *runner) EnableForwarding(iface string) error {
-	args := []string{
-		"int", "ipv4", "set", "int", strconv.Quote(iface), "for=en",
-	}
-	cmd := strings.Join(args, " ")
-	if stdout, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput(); err != nil {
-		return fmt.Errorf("failed to enable forwarding on [%v], error: %v. cmd: %v. stdout: %v", iface, err.Error(), cmd, string(stdout))
-	}
-
-	return nil
-}
-
-// EnsurePortProxyRule checks if the specified redirect exists, if not creates it.
-func (runner *runner) EnsurePortProxyRule(args []string) (bool, error) {
-	out, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput()
-
-	if err == nil {
-		return true, nil
-	}
-	if ee, ok := err.(utilexec.ExitError); ok {
-		// netsh uses exit(0) to indicate a success of the operation,
-		// as compared to a malformed commandline, for example.
-		if ee.Exited() && ee.ExitStatus() != 0 {
-			return false, nil
-		}
-	}
-	return false, fmt.Errorf("error checking portproxy rule: %v: %s", err, out)
-
-}
-
-// DeletePortProxyRule deletes the specified portproxy rule.  If the rule did not exist, return error.
-func (runner *runner) DeletePortProxyRule(args []string) error {
-	out, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput()
-
-	if err == nil {
-		return nil
-	}
-	if ee, ok := err.(utilexec.ExitError); ok {
-		// netsh uses exit(0) to indicate a success of the operation,
-		// as compared to a malformed commandline, for example.
-		if ee.Exited() && ee.ExitStatus() == 0 {
-			return nil
-		}
-	}
-	return fmt.Errorf("error deleting portproxy rule: %v: %s", err, out)
-}
-
-// DeleteIPAddress checks if the specified IP address is present and, if so, deletes it.
-func (runner *runner) DeleteIPAddress(args []string) error {
-	out, err := runner.exec.Command(cmdNetsh, args...).CombinedOutput()
-
-	if err == nil {
-		return nil
-	}
-	if ee, ok := err.(utilexec.ExitError); ok {
-		// netsh uses exit(0) to indicate a success of the operation,
-		// as compared to a malformed commandline, for example.
-		if ee.Exited() && ee.ExitStatus() == 0 {
-			return nil
-		}
-	}
-	return fmt.Errorf("error deleting ipv4 address: %v: %s", err, out)
-}
-
-func (runner *runner) GetDefaultGatewayIfaceName() (string, error) {
-	interfaces, err := runner.GetInterfaces()
-	if err != nil {
-		return "", err
-	}
-
-	for _, iface := range interfaces {
-		if iface.DefaultGatewayAddress != "" {
-			return iface.Name, nil
-		}
-	}
-
-	// return "not found"
-	return "", fmt.Errorf("Default interface not found")
-}
-
-func (runner *runner) GetInterfaceByName(name string) (Ipv4Interface, error) {
-	interfaces, err := runner.GetInterfaces()
-	if err != nil {
-		return Ipv4Interface{}, err
-	}
-
-	for _, iface := range interfaces {
-		if iface.Name == name {
-			return iface, nil
-		}
-	}
-
-	// return "not found"
-	return Ipv4Interface{}, fmt.Errorf("Interface not found: %v", name)
-}
-
-func (runner *runner) GetInterfaceByIP(ipAddr string) (Ipv4Interface, error) {
-	interfaces, err := runner.GetInterfaces()
-	if err != nil {
-		return Ipv4Interface{}, err
-	}
-
-	for _, iface := range interfaces {
-		if iface.IpAddress == ipAddr {
-			return iface, nil
-		}
-	}
-
-	// return "not found"
-	return Ipv4Interface{}, fmt.Errorf("Interface not found: %v", ipAddr)
-}
-
-// Restore is part of Interface.
-func (runner *runner) Restore(args []string) error {
-	return nil
-}

vendor/modules.txt

@@ -138,9 +138,6 @@ github.com/aws/aws-sdk-go/service/elbv2
 github.com/aws/aws-sdk-go/service/kms
 github.com/aws/aws-sdk-go/service/sts
 github.com/aws/aws-sdk-go/service/sts/stsiface
-# github.com/benmoss/go-powershell v0.0.0-00010101000000-000000000000 => github.com/k3s-io/go-powershell v0.0.0-20201118222746-51f4c451fbd7
-github.com/benmoss/go-powershell
-github.com/benmoss/go-powershell/backend
 # github.com/beorn7/perks v1.0.1
 github.com/beorn7/perks/quantile
 # github.com/blang/semver v3.5.1+incompatible
@@ -383,6 +380,7 @@ github.com/containernetworking/cni/pkg/version
 # github.com/containernetworking/plugins v0.9.1
 ## explicit
 github.com/containernetworking/plugins/pkg/ns
+github.com/containernetworking/plugins/pkg/utils/sysctl
 # github.com/containers/ocicrypt v1.1.1
 github.com/containers/ocicrypt
 github.com/containers/ocicrypt/blockcipher
@@ -398,17 +396,6 @@ github.com/containers/ocicrypt/keywrap/pkcs7
 github.com/containers/ocicrypt/spec
 github.com/containers/ocicrypt/utils
 github.com/containers/ocicrypt/utils/keyprovider
-# github.com/coreos/flannel v0.12.0 => github.com/k3s-io/flannel v0.12.0-k3s2
-## explicit
-github.com/coreos/flannel/backend
-github.com/coreos/flannel/backend/extension
-github.com/coreos/flannel/backend/hostgw
-github.com/coreos/flannel/backend/ipsec
-github.com/coreos/flannel/backend/vxlan
-github.com/coreos/flannel/network
-github.com/coreos/flannel/pkg/ip
-github.com/coreos/flannel/subnet
-github.com/coreos/flannel/subnet/kube
 # github.com/coreos/go-iptables v0.5.0
 ## explicit
 github.com/coreos/go-iptables/iptables
@@ -497,6 +484,20 @@ github.com/evanphx/json-patch
 github.com/exponent-io/jsonpath
 # github.com/fatih/camelcase v1.0.0
 github.com/fatih/camelcase
+# github.com/flannel-io/flannel v0.14.1
+## explicit
+github.com/flannel-io/flannel/backend
+github.com/flannel-io/flannel/backend/extension
+github.com/flannel-io/flannel/backend/hostgw
+github.com/flannel-io/flannel/backend/ipsec
+github.com/flannel-io/flannel/backend/vxlan
+github.com/flannel-io/flannel/network
+github.com/flannel-io/flannel/pkg/ip
+github.com/flannel-io/flannel/pkg/mac
+github.com/flannel-io/flannel/pkg/powershell
+github.com/flannel-io/flannel/pkg/routing
+github.com/flannel-io/flannel/subnet
+github.com/flannel-io/flannel/subnet/kube
 # github.com/form3tech-oss/jwt-go v3.2.2+incompatible
 github.com/form3tech-oss/jwt-go
 # github.com/fsnotify/fsnotify v1.4.9
@@ -683,9 +684,6 @@ github.com/jmespath/go-jmespath
 github.com/jonboulle/clockwork
 # github.com/json-iterator/go v1.1.10
 github.com/json-iterator/go
-# github.com/k3s-io/go-powershell v0.0.0-20200701182037-6845e6fcfa79
-github.com/k3s-io/go-powershell/backend
-github.com/k3s-io/go-powershell/utils
 # github.com/k3s-io/helm-controller v0.10.5
 ## explicit
 github.com/k3s-io/helm-controller/pkg/apis/helm.cattle.io
@@ -873,9 +871,6 @@ github.com/prometheus/common/model
 github.com/prometheus/procfs
 github.com/prometheus/procfs/internal/fs
 github.com/prometheus/procfs/internal/util
-# github.com/rakelkar/gonetsh v0.0.0-20190930180311-e5c5ffe4bdf0
-github.com/rakelkar/gonetsh/netroute
-github.com/rakelkar/gonetsh/netsh
 # github.com/rancher/dynamiclistener v0.2.2
 ## explicit
 github.com/rancher/dynamiclistener
@@ -3027,7 +3022,6 @@ sigs.k8s.io/yaml
 # github.com/containerd/ttrpc => github.com/containerd/ttrpc v1.0.2
 # github.com/containerd/typeurl => github.com/containerd/typeurl v1.0.2
 # github.com/containerd/zfs => github.com/containerd/zfs v1.0.0
-# github.com/coreos/flannel => github.com/k3s-io/flannel v0.12.0-k3s2
 # github.com/coreos/go-systemd => github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e
 # github.com/docker/distribution => github.com/docker/distribution v2.7.1-0.20190205005809-0d3efadf0154+incompatible
 # github.com/docker/docker => github.com/docker/docker v17.12.0-ce-rc1.0.20200310163718-4634ce647cf2+incompatible