my_config/ssh_config

Host mm
    HostName mount-mockery.de
    User root
    Port 22
    RequestTTY yes
    RemoteCommand tmux attach-session -t default_ssh || tmux new-session -s default_ssh

Host alders ahorn buche multimedia leyk ffe ffw gfw raspiscreen
    User dirk
    Port 22
    RequestTTY yes
    RemoteCommand tmux attach-session -t default_ssh || tmux new-session -s default_ssh

Host multimedia_kb
    HostName 192.168.0.2
    User pi
    Port 22
    RequestTTY yes
    RemoteCommand tmux attach-session -t default_ssh || tmux new-session -s default_ssh

Host multimedia_ext
    User dirk
    ProxyCommand ~/bin/pdns-proxy multimedia
    RequestTTY yes
    RemoteCommand tmux attach-session -t default_ssh || tmux new-session -s default_ssh
    LocalForward 1880 localhost:1880