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Re: Why does resolv.conf keep changing?

From David Wright <deblis@lionunicorn.co.uk>
Newsgroups linux.debian.user
Subject Re: Why does resolv.conf keep changing?
Date 2017-10-27 20:50 +0200
Message-ID <uFhRE-7yz-3@gated-at.bofh.it> (permalink)
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On Fri 27 Oct 2017 at 08:35:05 (-0400), Greg Wooledge wrote:
> On Fri, Oct 27, 2017 at 01:18:58PM +0100, Darac Marjal wrote:
> > Who's saying it must be installed?
> 
> A few people in this thread, though I think they're saying "should"
> rather than "must".
> 
> > Maybe I've missed something, but I think
> > the consensus in this discussion was that if you want your resolv.conf to be
> > unmanaged/static/administrator-controlled, then don't have resolvconf
> > installed. If you have resolvconf installed, then what's the point of
> > neutering it with a command?

Conceivably, one could switch between a *docked laptop with
chattr +i of a real file* that is occasionally taken on the road
with the simple actions of chattr -i and ln -s being necessary
to effect the change.
All the daemons could be working away as normal all the time,
but just rendered impotent when docked.

AFAICT this will also keep systemd happy when docked, and undocking
can be done with a symlink to /run/systemd/resolve/resolv.conf
(rather than /etc/resolvconf/run/resolv.conf), allowing
systemd-resolved.service to perform again.

> Let's review what we've learned so far.
> 
> If you want to make local modifications to /etc/resolv.conf and have
> them stick, here are some ways to do it:
> 
> 1) chattr +i /etc/resolv.conf

With the common sense assumptions that a real file has had the
required data entered, that would seem to be sufficient, without
having to cope with the complications following.

> 2) Individually configure each daemon that might try to modify the file,
>    to make it stop doing so.
> 
> 3) Install the resolvconf package, because by doing so you also install
>    various hacks that modify the behavior of all known Debian daemons,
>    stopping them from writing to /etc/resolv.conf.
> 
>    Then tell resolvconf itself to do nothing by putting resolvconf=NO
>    in the /etc/resolvconf.conf file.

Cheers,
David.

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Thread

Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-23 04:20 +0200
  Re: Why does resolv.conf keep changing? Joe <joe@jretrading.com> - 2017-10-23 11:00 +0200
    Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-23 11:50 +0200
      Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-24 01:40 +0200
        Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-24 02:30 +0200
          Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-24 05:10 +0200
            Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-24 09:20 +0200
              Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-24 14:20 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-24 14:30 +0200
                Re: Why does resolv.conf keep changing? Curt <curty@free.fr> - 2017-10-24 19:10 +0200
              Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-24 18:50 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 15:30 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 15:40 +0200
                Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-25 20:50 +0200
              Re: Why does resolv.conf keep changing? Roger Lynn <Roger@rilynn.me.uk> - 2017-10-25 00:30 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 04:10 +0200
    Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-23 13:00 +0200
    Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-23 18:10 +0200
    Re: Why does resolv.conf keep changing? Jude DaShiell <jdashiel@panix.com> - 2017-10-23 18:10 +0200
      Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-23 23:10 +0200
        Re: Why does resolv.conf keep changing? Dan Ritter <dsr@randomstring.org> - 2017-10-24 00:00 +0200
          Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-24 02:40 +0200
            Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 03:20 +0200
              Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 05:00 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 05:10 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 06:20 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 13:40 +0200
                Re: Why does resolv.conf keep changing? Alberto Luaces <aluaces@udc.es> - 2017-10-25 14:10 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 15:30 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 15:50 +0200
                Re: Why does resolv.conf keep changing? Curt <curty@free.fr> - 2017-10-25 16:30 +0200
                Re: Why does resolv.conf keep changing? Joe <joe@jretrading.com> - 2017-10-25 17:10 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 17:30 +0200
                Re: Why does resolv.conf keep changing? rhkramer@gmail.com - 2017-10-25 19:00 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 19:10 +0200
                Re: Why does resolv.conf keep changing? rhkramer@gmail.com - 2017-10-25 19:40 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 14:20 +0200
                Re: Why does resolv.conf keep changing? Felix Miata <mrmazda@earthlink.net> - 2017-10-25 05:50 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 13:40 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 14:00 +0200
                Re: Why does resolv.conf keep changing? tomas@tuxteam.de - 2017-10-25 14:20 +0200
                Re: Why does resolv.conf keep changing? Nicolas George <george@nsup.org> - 2017-10-25 14:50 +0200
                Re: Why does resolv.conf keep changing? Joe <joe@jretrading.com> - 2017-10-25 14:10 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 14:20 +0200
                Re: Why does resolv.conf keep changing? Joe <joe@jretrading.com> - 2017-10-25 15:00 +0200
                Re: Why does resolv.conf keep changing? Dan Ritter <dsr@randomstring.org> - 2017-10-25 17:10 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 18:50 +0200
                Re: Why does resolv.conf keep changing? Don Armstrong <don@debian.org> - 2017-10-25 21:30 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 13:40 +0200
              Re: Why does resolv.conf keep changing? Glenn English <ghe2001@gmail.com> - 2017-10-26 17:40 +0200
                Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-26 17:50 +0200
                Re: Why does resolv.conf keep changing? The Wanderer <wanderer@fastmail.fm> - 2017-10-26 18:00 +0200
                Re: Why does resolv.conf keep changing? Nicholas Geovanis <nickgeovanis@gmail.com> - 2017-10-26 18:20 +0200
                Re: Why does resolv.conf keep changing? Nicholas Geovanis <nickgeovanis@gmail.com> - 2017-10-26 18:40 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-27 02:00 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-27 02:00 +0200
  Re: Why does resolv.conf keep changing? Jörg-Volker Peetz <jvpeetz@web.de> - 2017-10-23 12:10 +0200
  Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 05:50 +0200
    Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 06:10 +0200
      Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 06:50 +0200
        Re: Why does resolv.conf keep changing? Curt <curty@free.fr> - 2017-10-25 08:50 +0200
          Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 14:40 +0200
            Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 14:50 +0200
              Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 15:00 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 15:10 +0200
              Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-25 15:10 +0200
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-10-25 15:10 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 15:30 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 15:30 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 16:10 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 16:10 +0200
                [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 20:30 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-25 20:40 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-25 20:40 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-25 21:00 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 21:00 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 15:10 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-26 15:40 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 16:00 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Don Armstrong <don@debian.org> - 2017-10-26 21:40 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 21:40 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Nicholas Geovanis <nickgeovanis@gmail.com> - 2017-10-26 16:30 +0200
                The new normal of logging Jonathan de Boyne Pollard <J.deBoynePollard-newsgroups@NTLWorld.COM> - 2017-10-26 21:10 +0200
                Re: The new normal of logging Nicholas Geovanis <nickgeovanis@gmail.com> - 2017-10-26 21:30 +0200
                Re: The new normal of logging Gene Heskett <gheskett@shentel.net> - 2017-10-27 02:10 +0200
                Re: The new normal of logging Ben Caradoc-Davies <ben@transient.nz> - 2017-10-27 03:30 +0200
                Re: The new normal of logging Gene Heskett <gheskett@shentel.net> - 2017-10-27 07:00 +0200
                Re: The new normal of logging Ben Caradoc-Davies <ben@transient.nz> - 2017-10-28 04:50 +0200
                Re: The new normal of logging Gene Heskett <gheskett@shentel.net> - 2017-10-28 08:10 +0200
                Re: The new normal of logging Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2017-10-27 04:10 +0200
                Re: The new normal of logging Darac Marjal <mailinglist@darac.org.uk> - 2017-10-27 11:40 +0200
                Plain text vs. binary (was Re: The new normal of logging) The Wanderer <wanderer@fastmail.fm> - 2017-10-27 14:40 +0200
                Re: The new normal of logging Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 21:30 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-27 17:10 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-27 17:50 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Curt <curty@free.fr> - 2017-10-27 20:30 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Brian <ad44@cityscape.co.uk> - 2017-10-27 20:50 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Curt <curty@free.fr> - 2017-10-27 21:50 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-27 22:00 +0200
                Re: [SOLVED] Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-28 18:30 +0200
                Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-26 05:40 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 12:50 +0200
                Re: Why does resolv.conf keep changing? Darac Marjal <mailinglist@darac.org.uk> - 2017-10-26 13:30 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 13:50 +0200
                Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-26 16:40 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-26 17:00 +0200
                Re: Why does resolv.conf keep changing? Mart van de Wege <mvdwege@gmail.com> - 2017-10-27 10:10 +0200
                Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-27 13:50 +0200
                Re: Why does resolv.conf keep changing? Darac Marjal <mailinglist@darac.org.uk> - 2017-10-27 14:20 +0200
                Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-27 14:40 +0200
                Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-27 20:50 +0200
                Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-27 20:50 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-27 16:20 +0200
                Re: Why does resolv.conf keep changing? Mart van de Wege <mvdwege@gmail.com> - 2017-10-28 00:10 +0200
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-28 00:10 +0200
                Re: Why does resolv.conf keep changing? David Wright <deblis@lionunicorn.co.uk> - 2017-10-28 02:00 +0200
                Re: Why does resolv.conf keep changing? Mart van de Wege <mvdwege@gmail.com> - 2017-10-28 15:30 +0200
                Re: Why does resolv.conf keep changing? Glenn English <ghe2001@gmail.com> - 2017-10-28 18:50 +0200
                Re: Why does resolv.conf keep changing? Mart van de Wege <mvdwege@gmail.com> - 2017-10-28 15:40 +0200
                Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-27 16:40 +0200
                Re: Why does resolv.conf keep changing? Mart van de Wege <mvdwege@gmail.com> - 2017-10-28 00:10 +0200
                Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-27 16:30 +0200
                Re: Why does resolv.conf keep changing? Michael Stone <mstone@debian.org> - 2017-10-28 02:40 +0200
                Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-26 14:40 +0200
                Re: Why does resolv.conf keep changing? Roger Lynn <Roger@rilynn.me.uk> - 2017-11-04 00:30 +0100
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-11-04 08:50 +0100
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-11-04 13:10 +0100
                Re: Why does resolv.conf keep changing? Brian <ad44@cityscape.co.uk> - 2017-11-04 22:00 +0100
                Re: Why does resolv.conf keep changing? <tomas@tuxteam.de> - 2017-11-04 22:10 +0100
                Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-11-04 22:10 +0100
                Re: Why does resolv.conf keep changing? Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-11-04 15:40 +0100
                Re: Why does resolv.conf keep changing? Greg Wooledge <wooledg@eeg.ccf.org> - 2017-10-26 15:30 +0200
              Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 15:30 +0200
            Re: Why does resolv.conf keep changing? Gene Heskett <gheskett@shentel.net> - 2017-10-25 15:00 +0200
              Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 15:30 +0200
        Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 15:10 +0200
          Re: Why does resolv.conf keep changing? Stefan Monnier <monnier@iro.umontreal.ca> - 2017-10-25 15:30 +0200
            Re: Why does resolv.conf keep changing? Roberto C. Sánchez <roberto@debian.org> - 2017-10-25 16:20 +0200

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