When doing a RH6.0 install on an AlphaServer2100 the installation recognizes the tulip device and prompts for various IP configuration stuff such as IP address of name server and therefore has reason to prepare the /etc/resolv.conf file, but it gives an error on the console saying cannot open %s/%s which indicates a few problems, one of which is probably not specifying the installation root top of the tree, and incorrect printf usage in the error message display itself.
I get this error everytime I install too, however, it still writes the /etc/resolv.conf correctly, so it's not that bad a problem, but it does "look bad" for RedHat.
Issue is resolved in the current release of the installer.