if_input_local
if_input_local(ifp, mcopy, af, NULL);
error = if_input_local(ifp, m, m->m_pkthdr.ph_family, ns);
int if_input_local(struct ifnet *, struct mbuf *, sa_family_t,
if_input_local(ifp, copym, dst->sin_family, NULL);
if_input_local(ifp, copym, dst->sin6_family, NULL);