diff --git a/src/nm-route-manager.c b/src/nm-route-manager.c
index fbccb2e827..18c0432c38 100644
--- a/src/nm-route-manager.c
+++ b/src/nm-route-manager.c
@@ -612,7 +612,7 @@ _vx_route_sync (const VTableIP *vtable, NMRouteManager *self, int ifindex, const
 					 * device routes, on the second the others (gateway routes). */
 					continue;
 				}
-				vtable->vt->route_add (priv->platform, 0, rest_route);
+				vtable->vt->route_add (priv->platform, 0, rest_route, -1);
 			}
 		}
 		g_array_unref (to_restore_routes);
@@ -656,7 +656,7 @@ _vx_route_sync (const VTableIP *vtable, NMRouteManager *self, int ifindex, const
 			    || route_id_cmp_result != 0
 			    || !_route_equals_ignoring_ifindex (vtable, cur_plat_route, cur_ipx_route)) {
 
-				if (!vtable->vt->route_add (priv->platform, ifindex, cur_ipx_route)) {
+				if (!vtable->vt->route_add (priv->platform, ifindex, cur_ipx_route, -1)) {
 					if (cur_ipx_route->rx.source < NM_IP_CONFIG_SOURCE_USER) {
 						_LOGD (vtable->vt->addr_family,
 						       "ignore error adding IPv%c route to kernel: %s",
diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c
index ed0d3c4340..b534b273d2 100644
--- a/src/platform/nm-platform.c
+++ b/src/platform/nm-platform.c
@@ -2947,7 +2947,7 @@ log_ip6_route (NMPlatform *self, NMPObjectType obj_type, int ifindex, NMPlatform
 /******************************************************************/
 
 static gboolean
-_vtr_v4_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route)
+_vtr_v4_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route, gint64 metric)
 {
 	return nm_platform_ip4_route_add (self,
 	                                  ifindex > 0 ? ifindex : route->rx.ifindex,
@@ -2956,12 +2956,12 @@ _vtr_v4_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *rout
 	                                  route->rx.plen,
 	                                  route->r4.gateway,
 	                                  route->r4.pref_src,
-	                                  route->rx.metric,
+	                                  metric >= 0 ? (guint32) metric : route->rx.metric,
 	                                  route->rx.mss);
 }
 
 static gboolean
-_vtr_v6_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route)
+_vtr_v6_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route, gint64 metric)
 {
 	return nm_platform_ip6_route_add (self,
 	                                  ifindex > 0 ? ifindex : route->rx.ifindex,
@@ -2969,7 +2969,7 @@ _vtr_v6_route_add (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *rout
 	                                  route->r6.network,
 	                                  route->rx.plen,
 	                                  route->r6.gateway,
-	                                  route->rx.metric,
+	                                  metric >= 0 ? (guint32) metric : route->rx.metric,
 	                                  route->rx.mss);
 }
 
diff --git a/src/platform/nm-platform.h b/src/platform/nm-platform.h
index 9bfb22b1a7..1b5bfb1575 100644
--- a/src/platform/nm-platform.h
+++ b/src/platform/nm-platform.h
@@ -315,7 +315,7 @@ typedef struct {
 	int (*route_cmp) (const NMPlatformIPXRoute *a, const NMPlatformIPXRoute *b);
 	const char *(*route_to_string) (const NMPlatformIPXRoute *route);
 	GArray *(*route_get_all) (NMPlatform *self, int ifindex, NMPlatformGetRouteFlags flags);
-	gboolean (*route_add) (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route);
+	gboolean (*route_add) (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route, gint64 metric);
 	gboolean (*route_delete) (NMPlatform *self, int ifindex, const NMPlatformIPXRoute *route);
 	gboolean (*route_delete_default) (NMPlatform *self, int ifindex, guint32 metric);
 	guint32 (*metric_normalize) (guint32 metric);