miniupnp.tuxfamily.org

[pbft]

A second issue I've encountered is installations where our device is connected to a router which is in turn connected to another router. For example:

Our device (192.168.1.x)
|
V
Router 1 (192.168.1.1 internal)
Router 1 (10.0.0.x external)
|
V
Router 2 (10.0.0.1 internal)
Router 2 (wan address external)
|
V
Internet

In this scenario, is there any reasonable way to
1) Figure out the topology
2) Set up ports through both routers

Any help, suggestions, guidance, or sympathy greatly appreciated.
[/list]

[miniupnp]

This setup is clearly out of IGD spec scope.

see http://miniupnp.tuxfamily.org/forum/viewtopic.php?t=16
_________________
Main miniUPnP author.
https://miniupnp.tuxfamily.org/

[pbft]

[miniupnp]

You could also use the router which IP address is the default gateway...
https://github.com/miniupnp/libnatpmp/blob/master/getgateway.c
_________________
Main miniUPnP author.
https://miniupnp.tuxfamily.org/