7363 with Comcast

[mike_calabrese]

Hello
I have a 7363 that I want to connect to a standard comcast cable modem
I willl be replacing an existing wifi router that has terrible wifi performance.

I can get the 7363 running in full bridge mode,with an ethernet cable to my existing router no problem. I am using that configuration now - connecting to the wifi networks on the 7363

When I try and swtich to router mode with NAT things get a bit weird.
I setup the wifi networks to use NAT to the WAN from a local IP subnet.

Before i connect the 7363 to the comcast modem, I use my mac and connect wirelessly to the 7363 no problem. It assigns me an address from the local subnet (10.10.10.0/24) and i can configure the 7363 w/o issues.

I then connect the wan port to the comcast modem. My MAC now gets an address coming from the 67.x.x.x block - which makes no sense to me. Comcast is assigning my existing router in the 174.x.x.x block, so i have no clue where the 67.x.x.x is coming from.

I have the internet setting on the 7363 set to DHCP and I have tried every combination of setting on the ethernet port that connects to the comcast modem I can think of

Can anyone help?

thanks