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

From	Rick Thomas <rbthomas@pobox.com>
Newsgroups	linux.debian.user
Subject	in /etc/network/interfaces: "auto" vs "allow-hotplug"
Date	2017-09-24 06:00 +0200
Message-ID	<ut6ff-3Eq-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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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)

It does not seem to correlate to kernel version.  The two “auto” machines are running 4.12 and 4.9;  The “allow-hotplug” machines are running anything between 3.16 and 4.12.

Nor does it seem to correlate with static vs dhcp.  The two “auto” machines are both using dhcp.  The “allow-hotplug” machines are using a mixture of static and dhcp.

Anybody have a clue as to what’s going on?

Thanks in advance…
Rick

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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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