stopping domain-name-servers on DHCPv4

Karl Auer kauer at biplane.com.au
Sat Sep 10 07:03:49 UTC 2011


On Sat, 2011-09-10 at 08:29 +0200, Nils Kassube wrote: 
> Karl Auer wrote:
> > I want DHCPv4 to get me an address, but I do NOT want it to write the
> > received nameserver addresses into resolv.conf. DHCP is being done by
> > wicd.
> > 
> > I've already tried several things:
> 
> ... which all included mangling of conf files. At the properties 
> dialogue for the connection you can set static DNS servers while still 
> using DHCP to get the address. But I never tried that myself, so I'm not 
> sure if it really works.

Thanks Nils. I don't want a static DNS address.

However, your answer gave me the idea that perhaps if I checked the
"Static DNS" flag in wicd, without actually supplying nameserver
addresses, wicd would do some magic to stop DHCP writing nameserver info
into resolv.conf. Sadly this did not happen - wicd let me check the box,
but it didn't "stick" unless I supplied actual nameserver info.

What I want is for DHCP to NOT write into resolv.conf any nameserver
addresses it receives. It *should* write any search names etc, and it
should acquire addresses for interfaces.

I'd be happy with a solution that prevented the server sending me
nameserver addresses, or a solution that caused the DHCP client to
ignore them, or a solution that simply prevented them being written into
resolv.conf. It's got to the point where I'm seriously considering
adding my own post-connection script to run after resolv.conf and rip
out nameserver lines, but that seems somehow antisocial :-) 

Regards, K.

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Karl Auer (kauer at biplane.com.au)                   +61-2-64957160 (h)
http://www.biplane.com.au/kauer/                   +61-428-957160 (mob)

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