neigh_key_eq32
if (!neigh_key_eq32(n, &attrs->addrs.saddr.a4) &&
!neigh_key_eq32(n, &attrs->addrs.daddr.a4))
return ___neigh_lookup_noref(&arp_tbl, neigh_key_eq32, arp_hashfn, &key, dev);
return neigh_key_eq32(neigh, pkey);