SSH and SSHFS over Unix Sockets
ssh -o ProxyCommand='socat - UNIX-CLIENT:/path/to/unix.socket' user@remote
sshfs -o ProxyCommand='socat - UNIX-CLIENT:/path/to/unix.socket' user@remote:/path/to/mount /mount/point
ssh -o ProxyCommand='socat - UNIX-CLIENT:/path/to/unix.socket' user@remote
sshfs -o ProxyCommand='socat - UNIX-CLIENT:/path/to/unix.socket' user@remote:/path/to/mount /mount/point