Host haddock-tmux
    User sjb
    Hostname 129.100.33.96
    ForwardAgent yes
    RemoteForward /run/user/1000/gnupg/S.gpg-agent /run/user/1000/gnupg/S.gpg-agent.extra
    StreamLocalBindUnlink yes
    RequestTTY yes
    RemoteCommand tmux -l new -A

Host haddock
    User sjb
    Hostname 129.100.33.96
    ForwardAgent yes
    RemoteForward /run/user/1000/gnupg/S.gpg-agent /run/user/1000/gnupg/S.gpg-agent.extra
    StreamLocalBindUnlink yes
    RequestTTY yes