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Re: Why does resolv.conf keep changing?

An interesting, accidental FYI on the subject of the resolvconf package:
Just now I upgraded an Ubuntu 17.04 test machine which was fully upgraded
only ten days ago. I see in the pending upgrade details that resolvconf is
"No longer supported by Canonical" since the previous upgrade.

On Thu, Oct 26, 2017 at 10:54 AM, The Wanderer <wanderer@fastmail.fm> wrote:
On 2017-10-26 at 11:35, Glenn English wrote:

> On Wed, Oct 25, 2017 at 1:06 AM, Michael Stone <mstone@debian.org> wrote:
>> On Mon, Oct 23, 2017 at 08:31:05PM -0400, Gene Heskett wrote:
>>> and made immutable. Particularly is the fact that /etc/resolv.conf isn't
>>> a link to something else but contains:
>>> nameserver 192.168.XX.1
>>> search  host    dns
>>> domain coyote.den
>> Please stop posting that, it uses incorrect syntax
> The 'search host dns' line? How do you set that order? I couldn't find
> that from a bit of surfing, and I'd like to have name lookups work in
> that order...

As was explained later on in this thread (and, I presume, would have
been explained to Gene previously in other threads), you set that search
order in /etc/nsswitch.conf, not in /etc/resolv.conf.

'man nsswitch.conf' documents the file, but all you should probably need
to do is look at the existing file, and tweak the 'hosts' line

If what you want is "search /etc/hosts, then search DNS, then give up",
the 'hosts' line you want is:

hosts:          files dns

There are additional options that might make sense, but that's the most
basic form.

My own nsswitch.conf hosts entry, which IIRC is fairly bog-standard
except maybe for a bit of reordering, reads:

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4

which, according to my understanding, simply adds a few additional types
of DNS lookup into the series before giving up.

   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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