odd gateway issue

[Red Squirrel]

I have a small network of routers running rip in a VM environment, and one of the routers has it's default gateway set to the bridged interface which gets on the real network and internet. From that router I can ping internet addresses fine. From any other router, I can't. if I do a traceroute it hits the last router of my network but wont go out. I've setted default gateways on all routers to point to the next hop for that router.

Without seeing the full config, what would be the most likely reason for this to happen? I find it odd that the traceroutes make it to the last router but not out, but from last router I can go out.

 

[spidey07]

Does the internet router perform NAT? If so, are the other routers networks included in the NAT?

In other words, this looks like an address translation configuration issue and not a routing problem.

 

[Red Squirrel]

Yeah the real router is doing nat, the ones in my VM are not, just plain routing with rip (and static default gateways pointing down towards the last router), my network is behind the nat, so really it should just be acting as a PC accessing the internet.