This bug was fixed in the package vlan - 1.9-3ubuntu10.1
--------------- vlan (1.9-3ubuntu10.1) trusty; urgency=medium
* If VLAN is configured with higher MTU than raw device MTU, which can happen if VLAN is ifup'ed before raw device, then increase raw device MTU first so the VLAN ifup does not fail. (LP: #1224007)
-- Dan Streetman <email address hidden> Thu, 08 Sep 2016 12:47:31 -0400
This bug was fixed in the package vlan - 1.9-3ubuntu10.1
---------------
vlan (1.9-3ubuntu10.1) trusty; urgency=medium
* If VLAN is configured with higher MTU than raw device MTU, which can
happen if VLAN is ifup'ed before raw device, then increase raw device
MTU first so the VLAN ifup does not fail. (LP: #1224007)
-- Dan Streetman <email address hidden> Thu, 08 Sep 2016 12:47:31 -0400