fin_saddr
ip->ip_dst.s_addr = fin->fin_saddr;
bcopy(&fin->fin_saddr, &sin.sa_data, sizeof (struct in_addr));
in.s_addr |= fin->fin_saddr & ~np->in_inmsk;
in.s_addr = ntohl(fin->fin_saddr);
in.s_addr = ntohl(fin->fin_saddr);
(ntohl(fin->fin_saddr) %
ipa = fin->fin_saddr;
s1 = LONG_SUM(ntohl(fin->fin_saddr));
ipn->in_outip = fin->fin_saddr;
ipn->in_srcip = fin->fin_saddr;
ipn->in_outip = fin->fin_saddr;
ipn->in_srcip = fin->fin_saddr;