G4 router connection issue on upgrade

I looked through the threads and did not fond anything that represented my issue but I do apologize in advance if this has already been discussed.

I have a g4 power mac that I recently upgraded to tiger. Once I upgraded, I was no longer able to connect via my router. Before the upgrade it worked fine and I able to plug directly into the dsl modem and still get a connection but not through the router. The pc that connects to the router connects fine as do the wireless connections that I have for the laptop and tivo.

I have researched this a bit but nothings seems to fix the issue. In the networking tab I can get the network status to turn green (as if everything is working properly) If I manually enter the ip and other info.

Any help or guidance would be greatly appreciated...

Update:

I changed the ip of the router and everything is up and running now.