This was present before. /etc/resolv.conf just contains 'search', and
linuxconf doesn't like it. Either linuxconf should be more forgiving, or
the installer should set up /etc/resolv.conf more strictly.
Under what conditions did you get this behavior? Static networking? DHCP?
It would have been with a static IP address on an Ethernet card.
*** Bug 8422 has been marked as a duplicate of this bug. ***
This issue will be fixed in the next cut of the installer made available.