[ale] You should be using SSH ControlMaster. Was: SSH Tunnel and Agent Question

[Matt Rideout]

Brian Pitts wrote, On 09/21/2009 12:28 AM:
> Another quirk I've seen with
> ControlMaster is when you have a host_b that you connect to via a
> ProxyCommand involving host_a. If you open a terminal, ssh into host_a,
> open another terminal, ssh into host_b, then switch back to the original
> terminal and try to disconnect from host_a it will hang until you also
> disconnect from host_b.
>
> So use it, but don't forgot that you set it up or else you'll
> occasionally be puzzled.
>
>   
I see the same behavior with vanilla port forwarding, and am glad that 
behavior exists. It's stopped me from disconnecting myself from some 
service that I was still using on many occasions.