+static int netdev_ip6tnl_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ Tunnel *t = IP6TNL(netdev);
+ uint8_t proto;
+ int r;
+
+ assert(netdev);
+ assert(link);
+ assert(m);
+ assert(t);
+ assert(t->family == AF_INET6);
+
+ r = sd_rtnl_message_append_u32(m, IFLA_IPTUN_LINK, link->ifindex);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_IPTUN_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in6_addr(m, IFLA_IPTUN_LOCAL, &t->local.in6);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_IPTUN_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in6_addr(m, IFLA_IPTUN_REMOTE, &t->remote.in6);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_IPTUN_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_TTL, t->ttl);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_IPTUN_TTL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ switch (t->ip6tnl_mode) {
+ case NETDEV_IP6_TNL_MODE_IP6IP6:
+ proto = IPPROTO_IPV6;
+ break;
+ case NETDEV_IP6_TNL_MODE_IPIP6:
+ proto = IPPROTO_IPIP;
+ break;
+ case NETDEV_IP6_TNL_MODE_ANYIP6:
+ default:
+ proto = 0;
+ break;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_PROTO, proto);
+ if (r < 0) {
+ log_netdev_error(netdev,
+ "Could not append IFLA_IPTUN_MODE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+