Re: Problem with DHCP, /etc/hosts and GNOME

[Keven Ring <keven mitre org>]

William Hooper wrote:

> Satish Balay said:
>
>  
>
> > Ah.. I interptered it as - an option to dhcp-clinet (not server) to
> > ignore what dhcp server says - and use the provided value as the
> > hostname. Perhpas there should be some other option for this
> > functionality? (RFE)
> >
> > I don't like hostname changing (when you move laptop between networks)
> > - this changes xauth which messes up everything else..
> >    
>
> A quick browse through the networking scripts suggests that the hostname
> will only change if it is "localhost".  I haven't looked too hard though. 
> I know that I don't have a problem with my laptop, which I set the
> hostname on during install (but that was with RHL 9 and an upgrade to
> FC1).  It may be more of a case of the DHCP servers I'm using not trying
> to change the hostname, though.
>
>
>  
It's in the /etc/sysconfig/network-scripts/network-functions script.  
There is a function called need_hostname().

Returns 0 if the current hostname is "localhost", 
"localhost.localdomain" or "(none)".  Returns 1 otherwise.  This 
function is called in the /etc/sysconfig/network-scripts/ifup script.  
However, again, just like everything else, just because the DHCP client 
*requests* a hostname, does not mean that the DHCP server is obliged to 
hand one back...

HTH...

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