How does the script in /etc/network/if-pre-up.d have anything to do with this bug? I thought that was placed there for ifupdown. This bug is about configuring VLANs with Network Manager, so that script shouldn't be relevant here.
I just tried it again today on a freshly installed Xenial desktop. The steps I took were: (0) Install the "vlan" package. (1) Configure the VLAN interface in the Network Manager UI (with the expected name). (see screenshot) (2) Go to the "IPv4 Settings" tab and configure the VLAN appropriately. This all seems to work for me now. That said, the user experience isn't as nice as it could be. (Either the "vlan" package should be installed by default, or I should be prompted to install it.) And I have to type way too much redundant information in the UI. But it seems to be working properly for me now. ** Attachment added: "Screenshot from 2016-06-14 12-22-30.png" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1519120/+attachment/4683807/+files/Screenshot%20from%202016-06-14%2012-22-30.png -- You received this bug notification because you are a member of Desktop 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 Status in vlan package in Ubuntu: Invalid 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1519120/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
