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Re: Which resolv.conf file?

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On Wed 31 Jul 2019 at 08:50:34 (-0400), Greg Wooledge wrote:
> On Wed, Jul 31, 2019 at 09:21:32AM +0300, Reco wrote:
> > On Wed, Jul 31, 2019 at 09:16:03AM +0300, Andrei POPESCU wrote:
> > > On Mi, 31 iul 19, 09:06:36, Reco wrote:
> > > > Assuming it is, and you're using ifupdown, you need to change
> > > > "dns-nameserver" stanza in the interface definition.
> > > 
> > > Careful, in /etc/network/interfaces it's 'dns-nameservers' (mind the 
> > > trailing 's'), because you can list more servers ;)
> > 
> > /usr/share/doc/resolvconf/README.gz disagrees with you:
> > 
> > * For each inet static logical interface through which a nameserver
> >   is accessible, add lines like the following to /etc/network/interfaces .
> > 
> > 	  dns-nameserver 11.22.33.44
> > 	  dns-nameserver 55.66.77.88
> > 	  dns-search foo.org bar.com
> 
> Reco is correct.
> 
> isc-dhcp-client uses "domain-name-servers" in its configuration file,
> whereas resolvconf uses "dns-nameserver".  Most likely, Andrei momentarily
> confused the two.

It might be the documentation that's confused. Here's an extract from
man resolvconf

✄✄✄✄✄✄✄✄

   ifup
       The ifup program can be used to configure network  interfaces
       according  to  settings  in /etc/network/interfaces.   To  make
       ifup push nameserver information to resolvconf when it
       configures an interface the administrator must add dns- option
       lines to the relevant iface stanza  in  interfaces(5).   The
       following  option  names  are  accepted: dns-nameserver,
       dns-search, and dns-sortlist. To add a nameserver IP address,
       add an option line consisting of  dns-nameserver  and  the
       address.   To  add  multiple  nameserver  addresses,  include
       multiple such dns-nameserver lines.

           dns-nameserver 192.168.1.254
           dns-nameserver 8.8.8.8

       To add search domain names, add a line beginning with dns-search.

           dns-search foo.org bar.com

       The dns-nameservers option is also accepted and, unlike dns-nameserver, can be given  mul‐
       tiple arguments, separated by spaces.

       The dns-domain option is deprecated in favor of dns-search.

       The resulting stanza might look like the following example.

           iface eth0 inet static
               address 192.168.1.3
               netmask 255.255.255.0
               gateway 192.168.1.1
               dns-nameserver 192.168.1.254
               dns-nameserver 8.8.8.8
               dns-search foo.org bar.com

✄✄✄✄✄✄✄✄

IOW you should be able to write

           dns-nameserver 192.168.1.254
           dns-nameserver 8.8.8.8

or

           dns-nameservers 192.168.1.254 8.8.8.8

But I have no idea whether

           dns-nameservers 8.8.8.8

and

           dns-nameservers 192.168.1.254
           dns-nameservers 8.8.8.8

are supported. Messy.

Cheers,
David.

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Re: Which resolv.conf file? Reco <recoverym4n@enotuniq.net> - 2019-07-31 08:10 +0200
  Re: Which resolv.conf file? Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-31 08:20 +0200
    Re: Which resolv.conf file? Reco <recoverym4n@enotuniq.net> - 2019-07-31 08:30 +0200
      Re: Which resolv.conf file? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-31 15:00 +0200
        Re: Which resolv.conf file? David Wright <deblis@lionunicorn.co.uk> - 2019-07-31 16:00 +0200
          Re: Which resolv.conf file? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-31 16:30 +0200
            Re: Which resolv.conf file? Reco <recoverym4n@enotuniq.net> - 2019-07-31 16:40 +0200
            Re: Which resolv.conf file? <tomas@tuxteam.de> - 2019-07-31 18:00 +0200
              Re: Which resolv.conf file? Greg Wooledge <wooledg@eeg.ccf.org> - 2019-07-31 18:10 +0200
                Re: Which resolv.conf file? <tomas@tuxteam.de> - 2019-07-31 18:40 +0200
          Re: Which resolv.conf file? Andrei POPESCU <andreimpopescu@gmail.com> - 2019-07-31 22:30 +0200
          Re: Which resolv.conf file? Celejar <celejar@gmail.com> - 2019-08-02 05:20 +0200

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