I set up a friend with a wireless AP, an old Linksys. I set it up so it gets IPs from the main router using DNS passthrough and pretty much just acts as a WAP.

I need to change the channel on it, but I can't work out its IP address. "ipconfig" on both a desktop using ethernet and a laptop using the Linksys tells me the gateway is 192.168.0.1. Traceroute I just see 192.168.0.1 then to the internet.

How do I find the IP of the Linksys router?