RTNLGRP_IPV4_IFADDR 1220 net/ipv4/devinet.c 	err = rtnl_notify(skb, net, pid, RTNLGRP_IPV4_IFADDR, nlh, GFP_KERNEL);
RTNLGRP_IPV4_IFADDR 1223 net/ipv4/devinet.c 		rtnl_set_sk_err(net, RTNLGRP_IPV4_IFADDR, err);