+static int netdev_ip6gre_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ Tunnel *t;
+ int r;
+
+ assert(netdev);
+
+ if (netdev->kind == NETDEV_KIND_IP6GRE)
+ t = IP6GRE(netdev);
+ else
+ t = IP6GRETAP(netdev);
+
+ assert(t);
+ assert(t->family == AF_INET6);
+ assert(link);
+ assert(m);
+
+ r = sd_rtnl_message_append_u32(m, IFLA_GRE_LINK, link->ifindex);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_GRE_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in6_addr(m, IFLA_GRE_LOCAL, &t->local.in6);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_GRE_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in6_addr(m, IFLA_GRE_REMOTE, &t->remote.in6);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_GRE_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_GRE_TTL, t->ttl);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_GRE_TTL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+