LONG_SUM
sum1 = LONG_SUM(ntohl(usin.sin_addr.s_addr)) + ntohs(usin.sin_port);
sum2 = LONG_SUM(ntohl(nat->nat_outip.s_addr)) + ntohs(nlp->nl_outport);
sum1 = LONG_SUM(ntohl(usin.sin_addr.s_addr));
sum2 = LONG_SUM(ntohl(nat->nat_outip.s_addr));
sum1 = LONG_SUM(ntohs(nat->nat_oicmpid));
sum2 = LONG_SUM(ntohs(nat->nat_nicmpid));
sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr) + \
sum2 = LONG_SUM(ntohl(nat->nat_nsrcaddr) + \
sum1 = LONG_SUM(ntohl(nat->nat_odstaddr) + \
sum2 = LONG_SUM(ntohl(nat->nat_ndstaddr) + \
sum1 = LONG_SUM(ntohl(nat->nat_nsrcaddr));
sum1 += LONG_SUM(ntohl(nat->nat_ndstaddr));
sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr));
sum1 += LONG_SUM(ntohl(nat->nat_odstaddr));
sum1 = LONG_SUM(ntohl(nat->nat_osrcaddr));
sum2 = LONG_SUM(ntohl(nat->nat_nsrcaddr));
sum1 = LONG_SUM(ntohl(nat->nat_odstaddr));
sum2 = LONG_SUM(ntohl(nat->nat_ndstaddr));
s1 = LONG_SUM(ntohl(fin->fin_saddr));
s2 = LONG_SUM(ntohl(nat->nat_nsrcaddr));
s2 = LONG_SUM(ntohl(nat->nat_odstaddr));
s1 = LONG_SUM(ntohl(fin->fin_daddr));
s2 = LONG_SUM(ntohl(nat->nat_ndstaddr));
s2 = LONG_SUM(ntohl(nat->nat_osrcaddr));
#define LONG_SUM6(_i) (LONG_SUM(ntohl(((u_32_t *)(_i))[0])) + \
LONG_SUM(ntohl(((u_32_t *)(_i))[1])) + \
LONG_SUM(ntohl(((u_32_t *)(_i))[2])) + \
LONG_SUM(ntohl(((u_32_t *)(_i))[3])))
s1 = LONG_SUM(fin->fin_plen - adjlen);
s2 = LONG_SUM(fin->fin_plen);