assert(sd_rtnl_message_append(message, IFLA_IFNAME, name) >= 0);
assert(sd_rtnl_message_append(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert(sd_rtnl_message_append(message, IFLA_MTU, &mtu) >= 0);
assert(sd_rtnl_message_append(message, IFLA_IFNAME, name) >= 0);
assert(sd_rtnl_message_append(message, IFLA_ADDRESS, ether_aton(mac)) >= 0);
assert(sd_rtnl_message_append(message, IFLA_MTU, &mtu) >= 0);