LONG_SUM
sum_changed = LONG_SUM(ntohl(nat->nat_inip.s_addr));
sum_orig = LONG_SUM(ntohl(nat->nat_outip.s_addr));
sum_changed = LONG_SUM(ntohl(nat->nat_outip.s_addr));
sum_orig = LONG_SUM(ntohl(nat->nat_inip.s_addr));
sum_changed = LONG_SUM(
sum_orig = LONG_SUM(
sum_changed = LONG_SUM(
sum_orig = LONG_SUM(
sum1 = LONG_SUM(ntohl(oip->ip_src.s_addr));
sum1 = LONG_SUM(ntohl(oip->ip_dst.s_addr));
sum2 = LONG_SUM(ntohl(in.s_addr));
s1 = LONG_SUM(ntohl(fin->fin_saddr));
s2 = LONG_SUM(ntohl(nat->nat_outip.s_addr));
s1 = LONG_SUM(ip->ip_len - adjlen);
s2 = LONG_SUM(ip->ip_len);
#define LONG_SUM6(in) (LONG_SUM(ntohl(((u_32_t *)(in))[0])) + \
LONG_SUM(ntohl(((u_32_t *)(in))[1])) + \
LONG_SUM(ntohl(((u_32_t *)(in))[2])) + \
LONG_SUM(ntohl(((u_32_t *)(in))[3])))