[Bug 1519120] Re: NetworkManager VLAN support fails unless vlan package is manually installed

[Martin Pitt]

The vlan merely provides integration into ifupdown, it is not required
for NM at all. I cannot reproduce this -- I just added a VLAN device in
NM and that works fine without the "vlan" package. However, you need to
disconnect and re-connect the underlying device (or reboot), so I guess
trying to install the package was a red herring. But keeping the bug
open for the "must fill in vlan name" -- personally I think this is
okay, but let's keep it as a wishlist bug.


** Summary changed:

- NetworkManager VLAN support fails unless vlan package is manually installed
+ NetworkManager should provide default name for VLAN

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https://bugs.launchpad.net/bugs/1519120

Title:
  NetworkManager should provide default name for VLAN

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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