copym->m_pkthdr.rcvif = ifp;
ip_input(copym);
#else
/* tell udp_input() not to check the udp checksum */
if (copym->m_pkthdr.csum_flags & CSUM_DELAY_DATA) {
copym->m_pkthdr.csum_flags |=
CSUM_DATA_VALID | CSUM_PSEUDO_HDR;
copym->m_pkthdr.csum_data = 0xffff;
}
if_simloop(ifp, copym, (struct sockaddr *)dst, 0);
#endif