Host gateway
        HostName tunnel-end.a-0.me
        User ssh-tunnel
        Port 22
        IdentityFile /home/autossh/.ssh/tunnel-key
        IdentitiesOnly yes
        ExitOnForwardFailure yes
        ServerAliveInterval 5
        ServerAliveCountMax 3
{% for forwarding in tunneled_ports %}
        RemoteForward localhost:{{ forwarding.ephemeral_port }} {{ forwarding.dest_host }}:{{ forwarding.dest_port }}
{% endfor %}