Re: Tramp and ssh control path

[Stefan Monnier]

Hmm.. I think the issue is as follows: if ControlPersist is no, then the
"old-style" control-master is used (i.e. the first session acts as
master), whereas otherwise, the new style (i.e. the master is a process
separate from the session processes, so the first session is not
special).

If the user has set ControlMaster in his ssh config but with
ControlPersist=no, then we might not want to use his control-master, and
Tramp is right to fiddle with ControlPath.

But if the user has ControlPersist enabled in his ssh config, then the
best value for tramp-ssh-controlmaster-options will usually be "".

>           (setq tramp-ssh-controlmaster-options
>                 (concat
>                   "-o ControlPath=/tmp/ssh-ControlPath-%%r@%%h:%%p "
>                   "-o ControlMaster=auto -o ControlPersist=no"))

Why ControlPersist=no?


        Stefan