L2TP_ATTR_IFNAME
if (info->attrs[L2TP_ATTR_IFNAME]) {
ifname = nla_data(info->attrs[L2TP_ATTR_IFNAME]);
if (info->attrs[L2TP_ATTR_IFNAME])
cfg.ifname = nla_data(info->attrs[L2TP_ATTR_IFNAME]);
nla_put_string(skb, L2TP_ATTR_IFNAME, session->ifname)) ||
[L2TP_ATTR_IFNAME] = {