root@OpenWrt:~$ iptables -t nat -L -v
Chain MINIUPNPD (0 references)
 pkts bytes target     prot opt in     out     source               destination

Chain NEW (1 references)
 pkts bytes target     prot opt in     out     source               destination
   11   894 RETURN     all  --  any    any     anywhere             anywhere            limit: avg 50/sec burst 100
    0     0 DROP       all  --  any    any     anywhere             anywhere

Chain PREROUTING (policy ACCEPT 11 packets, 894 bytes)
 pkts bytes target     prot opt in     out     source               destination
   11   894 NEW        all  --  any    any     anywhere             anywhere            state NEW
   11   894 prerouting_rule  all  --  any    any     anywhere             anywhere
    0     0 prerouting_wan  all  --  ppp0   any     anywhere             anywhere

Chain POSTROUTING (policy ACCEPT 36 packets, 10391 bytes)
 pkts bytes target     prot opt in     out     source               destination
   35  9362 postrouting_rule  all  --  any    any     anywhere             anywhere
    0     0 MASQUERADE  all  --  any    ppp0    anywhere             anywhere

Chain OUTPUT (policy ACCEPT 36 packets, 10391 bytes)
 pkts bytes target     prot opt in     out     source               destination

Chain postrouting_rule (1 references)
 pkts bytes target     prot opt in     out     source               destination

Chain prerouting_rule (1 references)
 pkts bytes target     prot opt in     out     source               destination

Chain prerouting_wan (1 references)
 pkts bytes target     prot opt in     out     source               destination
root@OpenWrt:~$