net_family_register
if (net_family_register(ipst->ips_arp_net_data, &ipst->ips_arproot)
if (net_family_register(ipst->ips_ipv4_net_data, &ipst->ips_ipv4root)
if (net_family_register(ipst->ips_ipv6_net_data, &ipst->ips_ipv6root)
extern int net_family_register(net_handle_t, hook_family_t *);
if ((ret = net_family_register(vnh->vnh_neti, &vnh->vnh_family)) != 0) {