I can't login to the cable modem if I don't know which IP it is.

The WAN ip given in my router is the same as my IP on the internet. I'm trying to figure out which 10.10.0.x IP corresponds to my cable modem. Nothing in my router's web config has said anything about that and that's the only interface (user interface not network interface) it has.

I do have the MAC address of my cable modem. I'm thinking there's probably a way to figure out which 10.10.0.x IP belongs to the same MAC address as my cable modem. I'll look into figuring that out when I get home. Hopefully it's what I need. In the meantime, I'm still open to suggestions.

Also, anyone is welcome to as much of the stupid as they want. I didn't realize I was hogging it.