route-update.sh: fix multipath route counting and stale detection

router/route-update.sh

@@ -456,7 +456,7 @@ process_routes()
         sed "s|^|route replace |; s|$| $route_via|" "$resolved_new" | \
             $ipcmd -batch - 2>&1 | grep -v "^$" | head -5
         local stale=$(mktemp)
-        $ipcmd route show table "$table" 2>/dev/null | awk '{print $1}' | sort | \
+        $ipcmd route show table "$table" 2>/dev/null | awk '/^[^\t ]/{print $1}' | sort | \
             comm -23 - "$resolved_new" > "$stale"
         if [ -s "$stale" ] ; then
             vlog "[$name]$label removing $(wc -l < "$stale") stale routes"
@@ -466,7 +466,7 @@ process_routes()
         rm -f "$stale"
 
         # Verify route count matches expected
-        local actual=$($ipcmd route show table "$table" 2>/dev/null | wc -l)
+        local actual=$($ipcmd route show table "$table" 2>/dev/null | grep -c '^[^\t ]')
         if [ "$actual" != "$count" ] ; then
             log "[$name]$label WARNING: route count mismatch: expected $count, got $actual"
         else