gpg-agent forwarding from Windows to a Linux machine

[Thomas Glanzmann]

Hello,
I would like to use gpg-agent on Windows with a yubikey and use ssh
to forward my gpg agent to a remote machine. Is that already possible,
if so how? I assume I can't use putty. So probably I have to use cygwin
openssh, but what about the unix socket on windows? Can a named pipe
be used?

Related: http://stackoverflow.com/questions/9029174/af-unix-equivalent-for-windows

SSH Agent Forwarding with putty and gpg4win already works perfectly.

Cheers,
        Thomas