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Asked and answered for Ubuntu 10.10, but I can't get this to work for Ubuntu 11.10. The search domain is not editable when the "Method" is "Automatic (DHCP)". Changing the method results in a removal of all nameserver entries from resolv.conf.

Is this really as broken as it seems, or just poorly documented?

=== After upgrade to Ubuntu 12, followed this link:

http://askubuntu.com/questions/135629/how-to-add-some-additional-dns-search-domains-without-ignoring-the-ones-returned which says to add append " x.y.org"; to /etc/dhcp/dhclient.conf.

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up vote 2 down vote accepted

You can modify /etc/dhcp3/dhclient.conf and add supersede domain-name "your.domain"; for substitution of the one received from dhcp or prepend domain-name "your.domain"; to add it.

On servers receiving dhcp from ISP and loosing the internal DNS server and domain search config I removed the resolvconf package and edited /etc/resolv.conf as it was done in the past (without resolvconf package it is not anymore overwritten).

On my current machine, I edited the /etc/resolvconf/resolv.conf.d/base file to include what I needed.

tbh, I'm not very happy with this new behavior (resolvconf overwriting resolv.conf automatically) and I couldn't find a "clean" solution yet. It is nice in certain situations and bad in others. I expect to see one nice solution here from someone smarter than me! ;)

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Adding /etc/resolvconf/resolv.conf.d/base worked for me. Thanks! – kevin cline Jan 8 '13 at 17:50

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