Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: systemd (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1657837

Title:
  systemd-networkd can't add a VLAN interface to bridge

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  This is apparently fixed in systemd 231:

     https://lists.freedesktop.org/archives/systemd-
  devel/2016-August/037385.html

  When systemd tries to put a VLAN interface into a bridge on Xenial, it
  fails:

  # journalctl --boot -u systemd-networkd
  Jan 15 09:16:46 hydrogen systemd[1]: Started Network Service.
  Jan 15 09:16:46 hydrogen systemd-networkd[1903]: br-mgmt: netdev exists, 
using existing without changing its parameters
  Jan 15 09:16:46 hydrogen systemd-networkd[1903]: br-mgmt: Could not append 
VLANs: Operation not permitted
  Jan 15 09:16:46 hydrogen systemd-networkd[1903]: br-mgmt: Failed to assign 
VLANs to bridge port: Operation not permitted
  Jan 15 09:16:46 hydrogen systemd-networkd[1903]: br-mgmt: Could not set 
bridge vlan: Operation not permitted
  Jan 15 09:16:59 hydrogen systemd-networkd[1903]: enp3s0: Configured
  Jan 15 09:16:59 hydrogen systemd-networkd[1903]: enp2s0: Configured

  Here are the systemd-networkd configs I used:

  root@hydrogen:/etc/systemd/network# cat enp3s0.network 
  [Match]
  Name=enp3s0
   
  [Network]
  VLAN=vlan10
  root@hydrogen:/etc/systemd/network# cat vlan10.netdev 
  [NetDev]
  Name=vlan10
  Kind=vlan
   
  [VLAN]
  Id=10
  root@hydrogen:/etc/systemd/network# cat vlan10.network 
  [Match]
  Name=vlan10
   
  [Network]
  Bridge=br-mgmt
  root@hydrogen:/etc/systemd/network# cat br-mgmt.netdev 
  [NetDev]
  Name=br-mgmt
  Kind=bridge
  root@hydrogen:/etc/systemd/network# cat br-mgmt.network 
  [Match]
  Name=br-mgmt
   
  [Network]
  Address=172.29.236.21/22

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