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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1519120 Title: Xenial: VLAN interfaces don't work until after a reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1519120/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs