ifaof_ifpforaddr
rti_ifa = ifaof_ifpforaddr(ifa->ifa_addr, info.rti_ifp);
struct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *);
ifa = ifaof_ifpforaddr(dst, ifa->ifa_ifp);
rtinfo->rti_ifa = ifaof_ifpforaddr(sa, rtinfo->rti_ifp);
ifaof_ifpforaddr(gateway, rtinfo->rti_ifp);
ia = (struct in_ifaddr *)ifaof_ifpforaddr(
ia = (INA)ifaof_ifpforaddr((SA)&ipaddr,
ifa = ifaof_ifpforaddr((struct sockaddr *)&sin6, ifp);
if ((ifa = ifaof_ifpforaddr((struct sockaddr *)&def, ifp)) == NULL) {