RTNLGRP_ND_USEROPT 1157 net/ipv6/ndisc.c 	rtnl_notify(skb, net, 0, RTNLGRP_ND_USEROPT, NULL, GFP_ATOMIC);
RTNLGRP_ND_USEROPT 1164 net/ipv6/ndisc.c 	rtnl_set_sk_err(net, RTNLGRP_ND_USEROPT, err);