Possible duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1492850, https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1635907
Can't reproduce on latest Xenial HWE kernel.
Possible duplicate of https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1492850, https:/ /bugs.launchpad .net/ubuntu/ +source/ network- manager/ +bug/1635907
Can't reproduce on latest Xenial HWE kernel.