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Re: /etc/init.d/networking does not start everything in /etc/network/interfaces

From Brian <ad44@cityscape.co.uk>
Newsgroups linux.debian.user
Subject Re: /etc/init.d/networking does not start everything in /etc/network/interfaces
Date 2016-05-19 00:40 +0200
Message-ID <rAiid-89L-9@gated-at.bofh.it> (permalink)
References (2 earlier) <rA7Zw-1wr-9@gated-at.bofh.it> <rAb73-3s8-13@gated-at.bofh.it> <rAc38-439-25@gated-at.bofh.it> <rAcPw-4AL-17@gated-at.bofh.it> <rAdBU-584-19@gated-at.bofh.it>
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On Wed 18 May 2016 at 12:32:24 -0500, David Wright wrote:

> On Wed 18 May 2016 at 17:39:45 (+0100), Brian wrote:
> > On Wed 18 May 2016 at 10:44:40 -0500, David Wright wrote:
> > 
> > > On Wed 18 May 2016 at 10:56:01 (-0400), Gene Heskett wrote:
> > > > 
> > > > auto lo eth0 eth1
> > > 
> > > Agree with Lisi, I've never seen this (though I'm not claiming it's
> > > either wrong or harmful).
> > 
> > It's an ok line. From interfaces(5):
> > 
> >   Lines beginning with the word "auto" are used to identify the physical
> >   interfaces to be brought up when . . . .
> > 	   ^
> > 	   |
> > 	   ^
> > 	   |
> > 	 Plural
> 
> Sorry, that wasn't my point. Here's the context again:

Sorry. Hopefully it will be useful for someone, though. :)

> On Wed 18 May 2016 at 10:56:01 (-0400), Gene Heskett wrote:
> [...]
> > Now,  for those complaining about my lack of posting the complete
> > interfaces file, here it is:
> > --------------------------------------------
> > # This file describes the network interfaces available on your
> > system
> > # and how to activate them. For more information, see interfaces(5).
> >
> > auto lo eth0 eth1
> >
> > # The loopback network interface
> > iface lo inet loopback
> > address 127.0.0.1
> > netmask 255.0.0.0
> 
> Agree with Lisi, I've never seen this (though I'm not claiming it's
> either wrong or harmful).
> 
> To elaborate, interfaces(5) says:
> 
>    The loopback Method
>        This method may be used to define the IPv4 loopback interface.
> 
>        Options
> 
>               (No options)
> 
> So these options:
> 
> > address 127.0.0.1
> > netmask 255.0.0.0
> 
> may or may not cause trouble.

127.0.0.1 is a class A address so has 255.0.0.0 as its netmask. The line
above above is redundant. The installer never uses it. Why a user would
add it is beyond me. I have

  brian@desktop:~$ /sbin/ifconfig lo
  lo        Link encap:Local Loopback  
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:65536  Metric:1
            RX packets:695157 errors:0 dropped:0 overruns:0 frame:0
            TX packets:695157 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0 
            RX bytes:135710702 (129.4 MiB)  TX bytes:135710702 (129.4 MiB)

without that line. As can be seen, the netmask is sorted out automatically.

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Thread

/etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 14:10 +0200
  Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Peter Ludikovsky <peter@ludikovsky.name> - 2016-05-17 14:20 +0200
    Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 14:40 +0200
  Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-17 14:20 +0200
    Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Mimiko <vbvbrj@gmail.com> - 2016-05-17 14:40 +0200
      Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Gilles Mocellin <gilles.mocellin@nuagelibre.org> - 2016-05-17 19:20 +0200
        Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-17 19:30 +0200
          Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-18 13:40 +0200
            Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-18 16:00 +0200
            Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-18 16:00 +0200
              Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces <tomas@tuxteam.de> - 2016-05-18 16:10 +0200
            Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-18 17:00 +0200
              Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces <tomas@tuxteam.de> - 2016-05-18 17:10 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-18 17:20 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-18 17:40 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-18 18:00 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-18 18:10 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Curt <curty@free.fr> - 2016-05-19 17:20 +0200
              Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Darac Marjal <mailinglist@darac.org.uk> - 2016-05-18 17:40 +0200
              Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-18 18:00 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Brian <ad44@cityscape.co.uk> - 2016-05-18 18:50 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-18 19:40 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Brian <ad44@cityscape.co.uk> - 2016-05-19 00:40 +0200
        Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 21:00 +0200
          Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-17 21:40 +0200
    Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 15:00 +0200
    Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces <tomas@tuxteam.de> - 2016-05-17 15:10 +0200
      Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-17 15:50 +0200
        Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces <tomas@tuxteam.de> - 2016-05-17 15:50 +0200
      Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 16:00 +0200
        Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-17 16:40 +0200
          RE: /etc/init.d/networking does not start everything in  /etc/network/interfaces Bonno Bloksma <b.bloksma@tio.nl> - 2016-05-17 17:20 +0200
          Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-17 17:30 +0200
          Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 17:30 +0200
            Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-17 18:50 +0200
              Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 20:10 +0200
              Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces <tomas@tuxteam.de> - 2016-05-18 11:00 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-18 19:30 +0200
            Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Elimar Riesebieter <riesebie@lxtec.de> - 2016-05-17 19:30 +0200
              Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-17 21:20 +0200
                Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces Andy Smith <andy@strugglers.net> - 2016-05-17 21:30 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-18 00:50 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-18 01:40 +0200
                Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Gene Heskett <gheskett@shentel.net> - 2016-05-18 04:10 +0200
          Re: /etc/init.d/networking does not start everything in  /etc/network/interfaces David Wright <deblis@lionunicorn.co.uk> - 2016-05-17 20:30 +0200
  Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Rodary Jacques <rodaryj@free.fr> - 2016-05-20 19:30 +0200
    Re: /etc/init.d/networking does not start everything in /etc/network/interfaces Lisi Reisz <lisi.reisz@gmail.com> - 2016-05-20 20:10 +0200

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