iptables -L -vn -t nat
Chain PREROUTING (policy ACCEPT 26486 packets, 2548K bytes)
 pkts bytes target     prot opt in     out     source               destination
  449 50030 prerouting_rule  all  --  *      *       0.0.0.0/0            0.0.0.0/0

Chain POSTROUTING (policy ACCEPT 1257 packets, 146K bytes)
 pkts bytes target     prot opt in     out     source               destination
  269 32101 postrouting_rule  all  --  *      *       0.0.0.0/0            0.0.0.0/0
  211 27220 MASQUERADE  all  --  *      vlan1   0.0.0.0/0            0.0.0.0/0
   17   816 SNAT       all  --  *      vlan2   0.0.0.0/0            0.0.0.0/0           to:85.64.202.6

Chain OUTPUT (policy ACCEPT 155 packets, 15454 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
    0     0 ACCEPT     tcp  --  vlan1  *       0.0.0.0/0            0.0.0.0/0           tcp dpt:22
    0     0 ACCEPT     tcp  --  vlan1  *       0.0.0.0/0            0.0.0.0/0           tcp dpt:80
    5   300 DNAT       tcp  --  vlan2  *       0.0.0.0/0            0.0.0.0/0           tcp dpt:4243 to:192.168.0.90:4243
   65 10366 prerouting_vlan1  all  --  vlan1  *       0.0.0.0/0            0.0.0.0/0

Chain prerouting_vlan1 (1 references)
 pkts bytes target     prot opt in     out     source               destination
   11   556 DNAT       tcp  --  *      *       0.0.0.0/0            0.0.0.0/0           multiport dports 4242 to:192.168.0.90:4242
   27  3365 DNAT       udp  --  *      *       0.0.0.0/0            0.0.0.0/0           multiport dports 4242 to:192.168.0.90:4242