NETLINK_URELEASE
if (state != NETLINK_URELEASE)
if (event != NETLINK_URELEASE || n->protocol != NETLINK_NETFILTER)
if (event == NETLINK_URELEASE && n->protocol == NETLINK_NETFILTER) {
if (event == NETLINK_URELEASE && n->protocol == NETLINK_NETFILTER) {
NETLINK_URELEASE, &n);
if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)