add an option to use an intermediate host to connect to the wanted destination host.
this is needed for example if you need to connect via a "jumphost" which is accessible, but destination host is in a secured zone.
Nathan Van Overloop commented
something like this would be usefull:
ProxyCommand ssh -l myusername publichost.oninternet.com -W %h:%p
Eskander Sapozhnikov commented
Need this option.
As I use it in my local terminal for example:
ssh -L 8180:privat_IP:8080 -i myKey.pem ec2-user@public_ip_jumpHost
Alexandre Jolimont commented
Need this !