in_broadcast
in_broadcast(satocsin(rt_getkey(rt))->sin_addr, rt->rt_ifp))
int in_broadcast(struct in_addr, struct ifnet *);
isbroadcast = in_broadcast(dst->sin_addr, ifp);
isbroadcast = in_broadcast(dst->sin_addr, ifp);
isbroadcast = in_broadcast(dst->sin_addr, ifp);
if (in_broadcast(ip->ip_dst, m_get_rcvif_NOMPSAFE(m))) {
in_broadcast(ip->ip_dst, m_get_rcvif_NOMPSAFE(m)))
in_broadcast(*dst4, m_get_rcvif_NOMPSAFE(m))) {