Same setup in a previous post, but different issue. My 2611 has eth0 set up as a DHCP client to my cable modem and it does receive the DNS server addresses that is is supposed to as evidenced by show hosts (and they're definitely not set static).
Eth1 is set up as a DHCP server for the LAN. It's handing out IPs and the default gateway information, but not the DNS server addresses.
I tried setting eth1's address as the DNS server in the scope, and eth0's, and I've tried leaving it as blank,...... but none will let my clients resolve names.
And I don't want to set the DNS server addresses that eth0 recieves from the cable modem into the LAN scope, since the ISP can change those DNS server addresses at any time.