Comment 14 for bug 922578

Martin-Éric wrote:
>> I just noticed another issue with this: until now, the /etc/resolv.conf
>> generated by network-manager would contain both "domain" and
>> "search" stanzas. Now, it only contains "search".

Steve wrote:
> I have noticed this as well, but I haven't been able to determine
> that this makes a difference functionally. If you know of one,
> let us know and I'll look at getting resolvconf fixed.

resolv.conf(5) says:

    The domain and search keywords are mutually
    exclusive. If more than one instance of these
    keywords is present, the last instance wins.

Because "search" is more versatile than "domain", resolvconf only writes a "search" line, not a "domain" line. Any "domain" information supplied to resolvconf is included on the "search" line.

Resolvconf, with thousands of popcon-reported instances installed, has worked this way for many years without anyone reporting a functional problem. If there is a third-party tool out there that reads resolv.conf and treats "domain" specially then we'll have to look into that.

--
Thomas