Apparently it seems this bug was due to a transition in drivers for the realtek chipsets. I have just retried installing from a daily ISO today and my Dapper method works again.
-- Failure to obtain IP with DHCP on Averatec laptop with rt2500 https://launchpad.net/bugs/60461 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
