Symbol: RTNLGRP_IPV4_MROUTE
net/ipv4/ipmr.c
2551
rtnl_notify(skb, net, 0, RTNLGRP_IPV4_MROUTE, NULL, GFP_ATOMIC);
net/ipv4/ipmr.c
2556
rtnl_set_sk_err(net, RTNLGRP_IPV4_MROUTE, err);