Update github.com/vishvananda/netlink to v1.2.0-beta

Latest version fixes a segfault when used on some ppp setup

Signed-off-by: Dominique Martinet <dominique.martinet@atmark-techno.com>

vendor/github.com/vishvananda/netlink/route.go

@@ -11,6 +11,24 @@ type Scope uint8
 
 type NextHopFlag int
 
+const (
+	RT_FILTER_PROTOCOL uint64 = 1 << (1 + iota)
+	RT_FILTER_SCOPE
+	RT_FILTER_TYPE
+	RT_FILTER_TOS
+	RT_FILTER_IIF
+	RT_FILTER_OIF
+	RT_FILTER_DST
+	RT_FILTER_SRC
+	RT_FILTER_GW
+	RT_FILTER_TABLE
+	RT_FILTER_HOPLIMIT
+	RT_FILTER_PRIORITY
+	RT_FILTER_MARK
+	RT_FILTER_MASK
+	RT_FILTER_REALM
+)
+
 type Destination interface {
 	Family() int
 	Decode([]byte) error
@@ -41,6 +59,7 @@ type Route struct {
 	MultiPath        []*NexthopInfo
 	Protocol         RouteProtocol
 	Priority         int
+	Family           int
 	Table            int
 	Type             int
 	Tos              int
@@ -49,6 +68,7 @@ type Route struct {
 	NewDst           Destination
 	Encap            Encap
 	Via              Destination
+	Realm            int
 	MTU              int
 	Window           int
 	Rtt              int
@@ -94,6 +114,7 @@ func (r Route) String() string {
 	}
 	elems = append(elems, fmt.Sprintf("Flags: %s", r.ListFlags()))
 	elems = append(elems, fmt.Sprintf("Table: %d", r.Table))
+	elems = append(elems, fmt.Sprintf("Realm: %d", r.Realm))
 	return fmt.Sprintf("{%s}", strings.Join(elems, " "))
 }
 
@@ -107,6 +128,7 @@ func (r Route) Equal(x Route) bool {
 		nexthopInfoSlice(r.MultiPath).Equal(x.MultiPath) &&
 		r.Protocol == x.Protocol &&
 		r.Priority == x.Priority &&
+		r.Realm == x.Realm &&
 		r.Table == x.Table &&
 		r.Type == x.Type &&
 		r.Tos == x.Tos &&