These last few days I have been playing with
KVM on Linux Mint. Installed an OpenBSD current snapshot, NetBSD and FreeBSD 9.3.
I am using
Virtual Machine Manager for managing and installing these virtual machines.
It all works rather well. The only thing I haven't figured out is how to configure the network part in such a way that I can use an external box login over SSH to for example the FreeBSD 9.3 image.
RTFM pointers are welcome, if at least it mentions which FM