title: Is it possible to run lxc based containers inside a docker based parent container?
body: <p>I have an existing lxc based container building framework that I'd like to host inside of a docker based container.  I've seen references to nesting lxc based containers, but I've seen nothing about nesting them with a docker based parent.</p>
  
  <p>First problem I run into when I try it is lxbr0 is missing in the docker parent. Not sure how to resolve that or if that's the only problem I'll run into.</p>
  
  <p>Is this possible?</p>
  
  <p>Here are the details of what I've tried.</p>
  
  <pre><code>On a Ubuntu 14.04 system
  @ubuntu ~ $ docker version
  Client version: 1.0.1
  Client API version: 1.12
  Go version (client): go1.2.1
  Git commit (client): 990021a
  Server version: 1.0.1
  Server API version: 1.12
  Go version (server): go1.2.1
  Git commit (server): 990021a
  
  @ubuntu ~ $ docker run -i -t --privileged ubuntu:14.04 bash
  root@d3e60c05b4f3:/# apt-get update
  ...
  apt-get install lxc
  ...
  
  root@d3e60c05b4f3:/# lxc-create -n t0 -t download -B dir -- -d centos -r 6 -a amd64
  Setting up the GPG keyring
  Downloading the image index
  Downloading the rootfs
  Downloading the metadata
  The image cache is now ready
  Unpacking the rootfs
  
  ---
  You just created a CentOS container (release=6, arch=amd64, variant=default)
  The default root password is: root
  
  root@d3e60c05b4f3:/# lxc-start -n t0
  lxc-start: failed to attach 'veth3EUUJS' to the bridge 'lxcbr0' : No such device
  lxc-start: failed to create netdev
  lxc-start: failed to create the network
  lxc-start: failed to spawn 't0'
  lxc-start: The container failed to start.
  lxc-start: Additional information can be obtained by setting the --logfile and --logpriority options.
  root@d3e60c05b4f3:/# ifconfig -a
  eth0      Link encap:Ethernet  HWaddr 2e:48:86:e5:6d:a7  
            inet addr:172.17.0.3  Bcast:0.0.0.0  Mask:255.255.0.0
            inet6 addr: fe80::2c48:86ff:fee5:6da7/64 Scope:Link
            UP BROADCAST RUNNING  MTU:1500  Metric:1
            RX packets:50764 errors:0 dropped:0 overruns:0 frame:0
            TX packets:27830 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000 
            RX bytes:95008668 (95.0 MB)  TX bytes:1528822 (1.5 MB)
  
  lo        Link encap:Local Loopback  
            inet addr:127.0.0.1  Mask:255.0.0.0
            inet6 addr: ::1/128 Scope:Host
            UP LOOPBACK RUNNING  MTU:1500  Metric:1
            RX packets:0 errors:0 dropped:0 overruns:0 frame:0
            TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:0 
            RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
  
  root@d3e60c05b4f3:/# 
  </code></pre>