That is my set up.
A few days ago, I was on XBL. Everything was working just fine.
When I got on tonight, it was not connecting to XBL.
The Xbox 360 connection test made it to "Network" but failed at "Internet".
I tried flushing and renewing the DNS, I've tried resetting all of the routers. I've tried using new DNS servers. Nothing will work.
I can ping the main router from the XBL router, connected via Ethernet, but I can't access the internet.
I really don't know exactly what I am doing, as I do not know the exact problem. I hope someone at least has a guess at what my problem is. My apologies for not being specific.
Thanks.
EDIT: By the way, I am using a Linksys WRT54G with DD-WRT firmware as the XBL router.