Sorry, answering my own question again. I tried a quick and dirty 
vserver mount of a normal install of RHEL6 into a vserver, and that 
works OK, so it seems conslusive it is down to some packages missing 
using the standard vserver install method via yum. In the end, I pruned 
the minimum install rpm list slightly, and ended up with an additional 
list of packages I put into /etc/vservers/.distributions/rhel6/pkgs/04. 
This file is attached. DNS now works OK. The additional package list is 
large-ish and increases the base install size by about 25% - OTOH, it 
does work. :)
If anybody is interested in rolling a "standard" RHEL6 build set for 
vserver, I can provide my /etc/vservers/.distributions/rhel6.
On 09/10/2010 03:47 PM, Gordan Bobic wrote:
> I'm having a weird problem. I cannot resolve DNS from inside the
> F12/RHEL6 guests. Doing it from a F11 guest works fine. I can ping IP
> addresses of the DNS servers, but hosts don't resolve. I have checked
> /etc/resolv.conf in both guests and they are the same. Where should I be
> looking for possible causes of the problem?
>
> Gordan