SSH X11 forwarding not working in toolbox.

[PaulJohnson]

Describe the bug
I have a Silverblue machine I want to access via SSH and start X11 applications on for local display.

X11 forwarding works fine in the main shell, but when I toolbox enter it doesn't work.

Steps how to reproduce the behaviour

1. Log in via SSH to a Sliverblue machine with X11 forwarding enabled.
2. Run firefox. Observe that the Firefox window appears on the local machine.
3. Do toolbox enter
4. sudo dnf install firefox (to get it installed in the toolbox)
5. Run firefox.
6. Get
   PuTTY X11 proxy: Unsupported authorisation protocol
Error: cannot open display: localhost:10.0

Expected behaviour
firefox and other X11 applications should work inside the toolbox in the same way that the work outside.

Actual behaviour
PuTTY X11 proxy: Unsupported authorisation protocol
Error: cannot open display: localhost:10.0

Output of toolbox --version (v0.0.90+)
toolbox version 0.0.99.4

Toolbox package info (rpm -q toolbox)
toolbox-0.0.99.4-1.fc38.x86_64

Output of podman version
e.g.,

Client:       Podman Engine
Version:      4.5.1
API Version:  4.5.1
Go Version:   go1.20.4
Built:        Fri May 26 18:58:48 2023
OS/Arch:      linux/amd64

Podman package info (rpm -q podman)
podman-4.5.1-1.fc38.x86_64

Info about your OS
Fedora Silverblue 38

Additional context
Might be related to #1290

[PaulJohnson]

Finally figured it out. The problem is that the hostname changes in the toolbox, so it can't find the right xauth magic cookie.

Two workarounds:

1. Use xauth list to get the current cookies, and then create a clone entry for a machine called toolbox.
2. sudo hostname <actual host> inside the toolbox.

[mpetuska]

I'm experiencing the same issue, would be nice to have it resolved or at least have some permanent workaround/script to patch it.