in_ifnet_broadcast
bool in_ifnet_broadcast(struct in_addr, struct ifnet *);
if (in_ifnet_broadcast(addr4->sin_addr, nh->nh_ifp))
else if (in_ifnet_broadcast(ip->ip_dst, m->m_pkthdr.rcvif))
#define SCTP_IS_IT_BROADCAST(dst, m) ((m->m_flags & M_PKTHDR) ? in_ifnet_broadcast(dst, m->m_pkthdr.rcvif) : 0)
in_ifnet_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
in_ifnet_broadcast(ip->ip_dst, m->m_pkthdr.rcvif))
in_ifnet_broadcast(ip->ip_dst, ifp))