Tailscale SSH: LocalForward to unix socket does not work

[jakob]

What is the issue?

I'm trying to open a tunnel to a PostgreSQL server listening on a unix socket.

This is probably related to #6232 (RemoteForward does not work for unix socket)

Steps to reproduce

Open an SSH tunnel with Tailscale SSH to the PostgreSQL server

ssh -L1234:/var/run/postgresql/.s.PGSQL.5432 postgres@100.x.x.x

Then try to connect to that server:

psql -h localhost -p 1234

Doesn't work, SSH says:

channel 3: open failed: unknown channel type: unsupported channel type

Are there any recent changes that introduced the issue?

No response

OS

Linux, macOS

OS version

No response

Tailscale version

1.32.3

Bug report

No response

[DentonGentry]

I think we'll cover this case in #6232 as well, both would be resolved by port forwarding to unix sockets.

Dup of #6232