sen_ip_src
sunion.sin.sin_addr = ipa->ipa_info.sen_ip_src;
sunion.sin.sin_addr = ipa->ipa_mask.sen_ip_src;
flow->sen_ip_src = src->sin.sin_addr;
flowmask->sen_ip_src = srcmask->sin.sin_addr;
sunion->sin.sin_addr = encap->sen_ip_src;
sizeof(struct in_addr), (caddr_t) &(ddst->sen_ip_src));
ssrc.sin.sin_addr = ddst->sen_ip_src;
ipa->ipa_info.sen_ip_src = ddst->sen_ip_src;
ipa->ipa_mask.sen_ip_src.s_addr = INADDR_BROADCAST;
ipa->ipa_info.sen_ip_src = ipo->ipo_addr.sen_ip_src;
ipa->ipa_mask.sen_ip_src = ipo->ipo_mask.sen_ip_src;