Get remote address when using direct-streamlocal at openssh.com.

[Stef Bon]

I've a server where clients can connect to using direct-streamlocal at openssh.com.
I want that the server "knows" the address of the client. I've tried
using the peercredentials
of the process connecting my server (which is a sshd process) and
check the environment.

I thought that in the environment the var SSH_CLIENT would be set, but
that did not work.
This sshd process has an almost empty environment file.

Is there another good way to find it?
Thanks in advance,

Stef Bon