select existing host as the initial connection to establish as a tunnel to another host
currently i use a port forward first, establishing the port forward and the configuring a ssh connection to use the ports.
It would be good to either select a current port forward or a current ssh connection when setting up new hosts.
host A: bastion , ssh listens on ssh 32415, the only system that allows remote ssh to any ip
host B: app1, ssh 22, only to fix ips
Assume bastion host A already setup
New host B:
*new option, allow the selection of other configured hosts*:
Select SSH Gateway: none, bastion, etc
This is a must-have. Same as existing ssh option -W