Unable to run LXC commands on xenial guest in trusty host with --share-net 1

[Tom Haddon]

This is a duplicate of 1551299

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lxc 1.0.8-0ubuntu0.3
ProcVersionSignature: Ubuntu 3.13.0-79.123-generic 3.13.11-ckt33
Uname: Linux 3.13.0-79-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
Date: Mon Feb 29 15:51:10 2016
Ec2AMI: ami-00000142
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: prodstack-zone-1
Ec2InstanceType: cpu1-ram2-disk50
Ec2Kernel: aki-00000002
Ec2Ramdisk: ari-00000002
KernLog:

ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lxc
UpgradeStatus: No upgrade log present (probably fresh install)
defaults.conf:
 lxc.network.type = veth
 lxc.network.link = lxcbr0
 lxc.network.flags = up
 lxc.network.hwaddr = 00:16:3e:xx:xx:xx