fix_outcksum
fix_outcksum(&fin->fin_ip->ip_sum, sumd);
fix_outcksum(&fin->fin_ip->ip_sum,
fix_outcksum(csump, sumd);
fix_outcksum(&fin->fin_ip->ip_sum, nat->nat_ipsumd);
fix_outcksum(csump, nat->nat_sumd[0]);
fix_outcksum(csump, nat->nat_sumd[1]);
fix_outcksum(csump, sumd);
fix_outcksum(csump, nat->nat_sumd[1]);
fix_outcksum(csump, nat->nat_sumd[0]);
fix_outcksum(csump, nat->nat_sumd[0]);
fix_outcksum(csump, nat->nat_sumd[1]);
fix_outcksum(&ip->ip_sum, sd);
fix_outcksum(&tcp->th_sum, is->is_sumd[0]);
fix_outcksum(&tcp->th_sum, is->is_sumd[1]);
fix_outcksum(&ip->ip_sum, sum2);
extern void fix_outcksum __P((u_short *, u_32_t));