[PVE-User] Proxmox KVM VNC socket is not reachable in IPv6

[Dietmar Maurer]

> Then I tried with socat - which syntax is different than netcat - but
> I could not make it work either (I think for the same reason than
> netcat6, only EXEC parameter).
> 
> In the meantime, an alternative solution can be to create an IPv6-only
> TCP server which forks and forwards data to the IPv4 TCP socket
> created by netcat. I'm doing this with socat:
> $ socat TCP6-LISTEN:5900,ipv6only=1,fork TCP:localhost:5900

Using 'socat' instead of 'nc' is maybe the solution. Feel free to send me patches.

- Dietmar