- // GRE ???
-// sprintf(str, "/sbin/iptables -A " phystable " -p 47 -i %s -j ACCEPT", interface);
-// safe_system(str);
- // ESP
-// sprintf(str, "/sbin/iptables -A " phystable " -p 50 -i %s -j ACCEPT", interface);
-// safe_system(str);
- // AH
-// sprintf(str, "/sbin/iptables -A " phystable " -p 51 -i %s -j ACCEPT", interface);
-// safe_system(str);