Various virtualization and container technologies nest within each other very well and provide different levels of isolation. Here's one example from my server.
Virtualization
If you haven't specified an IP while creating an `LXC` instance, you might end up with an IP that doesn't suit your needs. There's a quick and easy way of setting IP addresses for LXC containers. It is faster and requires less tinkering than trying to fix the IP either on the host dhcp side or the guest dhclient side.