NHF_INET
ipst->ips_ip4_observe_pr = net_protocol_lookup(id, NHF_INET);
NHF_INET,
ins->ipdn_v4hdl = net_protocol_lookup(ins->ipdn_netid, NHF_INET);
ifs->ifs_ipf_ipv4 = net_protocol_lookup(id, NHF_INET);
if ((ips->ips_ndv4 = net_protocol_lookup(netid, NHF_INET)) != NULL) {