RTNLGRP_NEIGH    2544 net/core/neighbour.c 	err = rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
RTNLGRP_NEIGH    2547 net/core/neighbour.c 		rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);