Fix routeregexp ipv6 (#2395)

* Update ovn-nbctl-legacy.go

* Update ovn-nbctl-legacy_test.go

* Update ovn-nbctl-legacy.go

(cherry picked from commit db435dc)

Author: dcasier

pkg/ovs/ovn-nbctl-legacy.go

@@ -1083,7 +1083,7 @@ func (c LegacyClient) GetStaticRouteList(router string) (routeList []*StaticRout
 	return parseLrRouteListOutput(output)
 }
 
-var routeRegexp = regexp.MustCompile(`^\s*((\d+(\.\d+){3})|(([a-f0-9:]*:+)+[a-f0-9]?))(/\d+)?\s+((\d+(\.\d+){3})|(([a-f0-9:]*:+)+[a-f0-9]?))\s+(dst-ip|src-ip)(\s+.+)?$`)
+var routeRegexp = regexp.MustCompile(`^\s*((\d+(\.\d+){3})|(([a-f0-9:]*:+)+[a-f0-9]*?))(/\d+)?\s+((\d+(\.\d+){3})|(([a-f0-9:]*:+)+[a-f0-9]*?))\s+(dst-ip|src-ip)(\s+.+)?$`)
 
 func parseLrRouteListOutput(output string) (routeList []*StaticRoute, err error) {
 	lines := strings.Split(output, "\n")

pkg/ovs/ovn-nbctl-legacy_test.go

@@ -21,13 +21,14 @@ func Test_parseLrRouteListOutput(t *testing.T) {
 	output = `IPv6 Routes
     fc00:f853:ccd:e793::2            fd00:100:64::2 dst-ip
     fc00:f853:ccd:e793::3            fd00:100:64::3 dst-ip
+    fc00:f853:ccd:e793::4            fd00:100:64::4444 dst-ip
             fd00:10:16::2            fd00:100:64::3 src-ip
             fd00:10:16::d            fd00:100:64::2 src-ip
          fd00:11:15::/112            fd00:100:64::2 src-ip ecmp
          fd00:11:15::/112            fd00:100:64::3 src-ip ecmp`
 	routeList, err = parseLrRouteListOutput(output)
 	ast.Nil(err)
-	ast.Equal(6, len(routeList))
+	ast.Equal(7, len(routeList))
 }
 
 func Test_parseLrPolicyRouteListOutput(t *testing.T) {