fyi: agent forwarding fails (with enabled ControlMaster) after time shift on client

[Steffen Nurpmeso]

Hello.

Yes, i think that was the cause why agent forwarding wasn't
performed at all, i had to rm(1) the control socket and the next
ssh(1) connection forwarded the agent normally again.  (It was
a huge timeshift by several hours.)  I.e., just in case this is
something you didn't have on your radar yet.
Ciao.

--steffen