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Re: in /etc/network/interfaces: "auto" vs "allow-hotplug"

From Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups linux.debian.user
Subject Re: in /etc/network/interfaces: "auto" vs "allow-hotplug"
Date 2017-09-25 15:10 +0200
Message-ID <utBj4-6Ms-21@gated-at.bofh.it> (permalink)
References <ut6ff-3Eq-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sat, Sep 23, 2017 at 08:56:49PM -0700, Rick Thomas wrote:
> I have two machines (out of a group of ten) that will not bring up their ethernet interface at boot time if the interfaces is of type “allow-hotplug”.  When I change that to “auto” the interface comes up at boot with no problem…
> 
> The remaining eight machines have no problem with allow-hotplug. (which is the default as setup by the d-i)

The basic difference is the order in which services get loaded at
boot time, and whether the services wait for something, or just go.

An interface marked "auto" will be waited-for by services that are
configured to wait for interfaces to be up.  E.g. mounting NFS file
systems, or starting an NFS server.

An interface marked "allow-hotplug" is considered nonessential or
transient, and the core OS services won't wait for it before starting.

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Thread

in /etc/network/interfaces:  "auto" vs "allow-hotplug" Rick Thomas <rbthomas@pobox.com> - 2017-09-24 06:00 +0200
  Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Henrique de Moraes Holschuh <hmh@debian.org> - 2017-09-24 15:30 +0200
    Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Rick Thomas <rbthomas@pobox.com> - 2017-09-25 11:20 +0200
  Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 15:10 +0200
    Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-25 17:50 +0200
      Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Gene Heskett <gheskett@shentel.net> - 2017-09-25 18:10 +0200
        Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-25 19:30 +0200
    Re: in /etc/network/interfaces:  "auto" vs "allow-hotplug" Gene Heskett <gheskett@shentel.net> - 2017-09-25 17:50 +0200
  Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Jimmy Johnson <field.engineer@gmail.com> - 2017-09-25 19:30 +0200
    Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Rick Thomas <rbthomas@pobox.com> - 2017-09-26 11:40 +0200
      Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-09-26 14:00 +0200
      Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Greg Wooledge <wooledg@eeg.ccf.org> - 2017-09-26 15:30 +0200
        Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Gene Heskett <gheskett@shentel.net> - 2017-09-26 17:30 +0200
        Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Rick Thomas <rbthomas@pobox.com> - 2017-09-26 23:30 +0200
          Re: in /etc/network/interfaces: "auto" vs "allow-hotplug" Jimmy Johnson <field.engineer@gmail.com> - 2017-09-27 01:10 +0200

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