WAN link problems on 18.06.2 with wrt3200acm

OK, I think I figured it out.

I think the DHCP lease is being granted upstream of the cable modem, and that it's tied to something about the cable modem's id so that I get only 1 IP address, but it also is associated with the mac address that learns the actual IP address.

On this theory, I changed the mac address of my router's wan interface to match the mac address of the laptop that got the initial lease (granted for 90 days, if I'm reading "7776000" correctly), and that let me learn an IP address after all. Now I'll just have to get it to auto-propagate the DNS and it should be in decent shape.

Thanks for looking, folks, I appreciate the feedback.