VXLAN_TUNL_DEV1
SYS_NOFAIL("ip link del %s", VXLAN_TUNL_DEV1);
VXLAN_TUNL_DEV1);
SYS(fail, "ip link set dev %s address %s up", VXLAN_TUNL_DEV1, MAC_TUNL_DEV1);
SYS(fail, "ip addr add dev %s %s/24", VXLAN_TUNL_DEV1, IP4_ADDR_TUNL_DEV1);
IP4_ADDR_TUNL_DEV0, MAC_TUNL_DEV0, VXLAN_TUNL_DEV1);
SYS_NOFAIL("ip link delete dev %s", VXLAN_TUNL_DEV1);
if (tc_prog_attach(VXLAN_TUNL_DEV1, get_src_prog_fd, set_src_prog_fd))