ips_ip_forwarding
#define WE_ARE_FORWARDING(ipst) ((ipst)->ips_ip_forwarding == IP_FORWARD_ALWAYS)
(ipst->ips_ip_forwarding ? 1 : 2));
(ipst->ips_ip_forwarding ? 1 : 2));
if (ipst->ips_ip_forwarding != 0)
ipst->ips_saved_ip_forwarding = ipst->ips_ip_forwarding;
ipst->ips_ip_forwarding = IP_FORWARD_ALWAYS;
ipst->ips_ip_forwarding = ipst->ips_saved_ip_forwarding;