Re: hotpluggable member of a bridge

From	Reco <recoverym4n@gmail.com>
Newsgroups	linux.debian.user
Subject	Re: hotpluggable member of a bridge
Date	2017-01-05 17:10 +0100
Message-ID	<sWiM1-5ja-1@gated-at.bofh.it> (permalink)
References	<sW74d-5AZ-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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	Hi.

On Wed, 04 Jan 2017 22:34:16 -0500
Stefan Monnier <monnier@iro.umontreal.ca> wrote:

> I have a bridge interface `br0` which usually contains jut `eth0` but
> occasionally also needs to contain `usb0`, which is an ethernet-dongle
> kind of thing.
> 
> How do I setup /etc/network/interfaces for that?
> 
> Currently, I just setup everything "manually": `br0` is setup `static`,
> and `usb0` is setup as `manual` with post-up scripts that add it to
> the bridge.
> 
> Is there something better?  Like a predefined way to just say that when
> `usb0` appears, it should be added to `br0` (and ideally, this would
> also `ifup` the `br0` interface if it's not up yet).

Conventional Linux bridge cannot do that. All those interfaces(5)
stanzas are merely a wrapper to 'brctl addbr' and 'brctl addif', which
are invoked by ifupdown.

But, it all changes if you replace conventional bridge with
openvswitch, which *can* add new interfaces (ports as they call it) to
its own bridges dynamically *and* it can be configured via interfaces(5).

A sample configuration would be:

allow-ovs br0
iface br0 inet4 static
	address …
	netmask …
	ovs_type OVSBridge

allow-br0 eth0
iface eth0 inet6 auto
	ovs_type OVSPort
	ovs_bridge br0

allow-hotplug usb0
iface usb0 inet6 auto
	ovs_type OVSPort
	ovs_bridge br0

Reco

Thread

hotpluggable member of a bridge Stefan Monnier <monnier@iro.umontreal.ca> - 2017-01-05 04:40 +0100
  Re: hotpluggable member of a bridge Nicolas George <george@nsup.org> - 2017-01-05 10:10 +0100
    Re: hotpluggable member of a bridge <tomas@tuxteam.de> - 2017-01-05 10:30 +0100
      Re: hotpluggable member of a bridge Michael Biebl <biebl@debian.org> - 2017-01-05 16:30 +0100
        Re: hotpluggable member of a bridge Sven Hartge <sven@svenhartge.de> - 2017-01-06 03:00 +0100
          Re: hotpluggable member of a bridge <tomas@tuxteam.de> - 2017-01-06 09:40 +0100
    Re: hotpluggable member of a bridge Stefan Monnier <monnier@iro.umontreal.ca> - 2017-01-05 16:30 +0100
      Re: hotpluggable member of a bridge Nicolas George <george@nsup.org> - 2017-01-05 16:40 +0100
        Re: hotpluggable member of a bridge Stefan Monnier <monnier@IRO.UMontreal.CA> - 2017-01-05 18:30 +0100
        Re: Congratulations Danielle , Your Roof is Covered - FREE!GYfb Danielle Gregory <danielle.k.gregory@gmail.com> - 2017-01-05 22:10 +0100
        Re: Congratulations Aileen , Your Roof is Covered - FREE!PHYi tazzygirl tazzygirl <saratazmtz77@gmail.com> - 2017-01-05 22:10 +0100
        RE: Congratulations Emmanuel , Your Roof is Covered - FREE!44OO Jennyetta Washington <manolofimbres@gmail.com> - 2017-01-05 22:20 +0100
  Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-05 17:10 +0100
    Re: hotpluggable member of a bridge Joshua Schaeffer <jschaeffer0922@gmail.com> - 2017-01-05 17:20 +0100
      Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-05 17:40 +0100
        Re: hotpluggable member of a bridge Joshua Schaeffer <jschaeffer0922@gmail.com> - 2017-01-05 18:10 +0100
        Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-05 22:20 +0100
          Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-05 22:30 +0100
          Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-05 22:40 +0100
            Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-08 16:50 +0100
              Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-08 17:20 +0100
                Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-08 18:00 +0100
    Re: hotpluggable member of a bridge Stefan Monnier <monnier@iro.umontreal.ca> - 2017-01-06 02:20 +0100
      Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-06 12:40 +0100
        Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-06 13:20 +0100
          Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-08 17:00 +0100
            Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-08 17:20 +0100
              Re: hotpluggable member of a bridge Reco <recoverym4n@gmail.com> - 2017-01-08 17:30 +0100
              Re: hotpluggable member of a bridge Pascal Hambourg <pascal@plouf.fr.eu.org> - 2017-01-08 17:30 +0100
        Re: hotpluggable member of a bridge Stefan Monnier <monnier@iro.umontreal.ca> - 2017-01-06 22:50 +0100
  Re: hotpluggable member of a bridge Jonathan Dowland <jmtd@debian.org> - 2017-01-06 18:20 +0100

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