UPnP Multi-WAN

• 1. Make the simplest UPnP config for just WAN1

• 2. Add the following script as a schedule: will clone UPnP Dynamic NAT entries as normal NAT entries for WAN2.

Schedule time can be every minute.

(set <WAN2 IP> manually)

:global UPnPs [/ip fi nat find dynamic]; :if ($UPnPs != $UPnPz) do={ :global UPnPz; :set $UPnPz $UPnPs; /ip fi nat remove [/ip fi nat find comment="UPnP_Cloned"]; :foreach i in=([/ip fi nat find dynamic]) do={/ip fi nat add chain=dstnat dst-address="<WAN 2 IP>" protocol=[/ip fi nat get $i protocol] to-addresses=[/ip fi nat get $i to-addresses] to-ports=[/ip fi nat get $i to-ports] action=dst-nat dst-port=[/ip fi nat get $i dst-port] comment="UPnP_Cloned"}}

Same script easier to read with syntax colorization

• 3. For large networks you may find it useful to clean any Dynamic NAT entries and cloned NAT entry every other night, as old ones may pile up:

/ip firewall nat remove [/ip firewall nat find comment="UPnP_Cloned"]