if_simloop
if_simloop(ifp, n, dst->sa_family, hlen);
if_simloop(ifp, m, dst->sa_family, hlen);
return (if_simloop(ifp, m, dst->sa_family, 0));
int if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen);
if_simloop(viftable[reg_vif_num].v_ifp, m, dst.sin_family, 0);
if_simloop(ifp, copym, dst->sin_family, 0);
if_simloop(mif6table[reg_mif_num].m6_ifp, m,
if_simloop(ifp, copym, dst->sin6_family, 0);