MAC_TUNL_DEV1
IP4_ADDR_TUNL_DEV1, MAC_TUNL_DEV1, VXLAN_TUNL_DEV0);
SYS(fail, "ip link set dev %s address %s up", VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
IP6VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);