I just noticed that when I did a reboot of my Coova box (WRT54G v2) that during the reboot process, my Macbook, which is connected via Ethernet, received a new IP by a router on the WAN side. The same router that gives my Coova it's IP address.
Since they are on different subnets, this causes a problem. I have to go an renew my lease to get a new IP, but I only get a new gateway, the IP stays the same, but in the Coova's routing tables and Arp tables, there are entries for this IP, hence things work...
Is this a bug?
I did not think that I could get an IP from a DHCP server on the WAN side?