This was working on 14.04.
Not working on 16.04.
root@acmu:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"
root@acmu:~# apt-cache policy vlan
vlan:
Installed: 1.9-3.2ubuntu1
Candidate: 1.9-3.2ubuntu1
Version table:
*** 1.9-3.2ubuntu1 500
500 http://192.168.1.20/ubuntu xenial/main i386 Packages
500 file:/repo/debs i386/ Packages
100 /var/lib/dpkg/status
root@acmu:~# uname -a
Linux acmu 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:34:49 UTC 2016 i686
i686 i686 GNU/Linux
root@acmu:~# cat /etc/network/interfaces | grep -A5 enp3s0.345
auto enp3s0.345
iface enp3s0.345 inet static
address 239.192.21.5
netmask 255.255.255.0
network 239.192.21.0
broadcast 239.192.21.255
root@acmu:~# ifup enp3s0.345
Cannot find device "enp3s0.345"
Failed to bring up enp3s0.345.
A reboot did not help.
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Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1519120
Title:
Xenial: VLAN interfaces don't work until after a reboot
Status in network-manager package in Ubuntu:
Confirmed
Bug description:
I tried to use the network manager UI to define a VLAN interface, and
nothing happened. There are a few bugs here:
(1) When creating a VLAN interface through the UI, the "vlan interface
name" must be filled in. This should just default to <interface-
name>.<vid>, rather than being a required field. (I typed in "vlan100"
to get the "Save" button to activate.)
(2) After creating my VLAN interface, nothing happened. No new
interface appeared. I then realized that I had not installed the
"vlan" package, and assumed that NetworkManager therefore could not
complete configuration of the interface.
(3) After installing the 'vlan' package (and then telling
NetworkManager to disconnect and reconnect my Ethernet interface from
the UI, just for good measure), still no VLAN interfaces were present
on my system.
I also tried editing the VLAN interface in the UI, and specifying
"enp4s0f1.100", but still no VLAN interface came online.
# apt-cache policy network-manager
network-manager:
Installed: 1.0.4-0ubuntu6
Candidate: 1.0.4-0ubuntu6
Version table:
*** 1.0.4-0ubuntu6 0
500 http://172.16.42.88/ubuntu/ xenial/main amd64 Packages
100 /var/lib/dpkg/status
# apt-cache policy vlan
vlan:
Installed: 1.9-3.2ubuntu1
Candidate: 1.9-3.2ubuntu1
Version table:
*** 1.9-3.2ubuntu1 0
500 http://172.16.42.88/ubuntu/ xenial/main amd64 Packages
100 /var/lib/dpkg/status
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https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1519120/+subscriptions
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