IFLA_VXLAN_GROUP
[IFLA_VXLAN_GROUP] = { .len = sizeof_field(struct iphdr, daddr) },
if (data[IFLA_VXLAN_GROUP]) {
NL_SET_ERR_MSG_ATTR(extack, tb[IFLA_VXLAN_GROUP], "New group address family does not match old group");
conf->remote_ip.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_GROUP]);
if (nla_put_in_addr(skb, IFLA_VXLAN_GROUP,