Pipework lets you connect together containers in arbitrarily complex scenarios. Pipework uses cgroups and namespace and works with "plain" LXC containers (created with lxc-start), and with the awesome Docker.If you use VirtualBox, you will have to update your VM network settings. Open the settings panel for the VM, go the the "Network" tab, pull down the "Advanced" settings. Here, the "Adapter Type" should be pcnet (the full name is something like "PCnet-FAST III"), instead of the default e1000 (Intel PRO/1000). Also, "Promiscuous Mode" should be set to "Allow All".