[Bug 1307429] [NEW] Existing allow-hotplug devices do not come up

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Benjamin Drung (bdrung):

Devices that are listed with allow-hotplug in /etc/network/interfaces do
not come up when they are hotplugged. "ip addr" shows that these devices
are down.

Steps to reproduce:

1) Install Ubuntu 12.04, 13.10, or 14.04 in a virtual machine (e.g. with libvirt) with one network device.
2) Modify /etc/network/interfaces to

auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet dhcp
allow-hotplug eth1
iface eth1 inet dhcp
allow-hotplug eth2
iface eth2 inet dhcp

3) Boot your virtual machine.
4) Type "ip addr" to show your network devices. It should show eth0 which should be up (but isn't)
5) Add/Hotplug one NIC to your virtual machine.
6) "ip addr" should show that eth1 is up too (but isn't)

** Affects: ifupdown (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: patch
-- 
Existing allow-hotplug devices do not come up
https://bugs.launchpad.net/bugs/1307429
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