net_instance_register
if (net_instance_register(ipd_neti) == DDI_FAILURE) {
if (net_instance_register(ipfncb) == DDI_FAILURE) {
if (net_instance_register(bpf_inst) != 0) {
extern int net_instance_register(net_instance_t *);
VERIFY3S(net_instance_register(viona_neti), ==, DDI_SUCCESS);