[Users] Disable IPv6

[Edward]

On Sat, 16 Jul 2022 13:34:30 +0200
Michael Rasmussen via Users <users at lists.claws-mail.org> wrote:

> On Sat, 16 Jul 2022 07:20:31 -0400
> Edward <epp at caramail.com> wrote:
>
> > The virtual manager in question has Debian sid (unstable)
> > installed. I also have Debian bookworm (testing) installed in
> > another VM and Claws (both version 4.1.0) works perfectly in
> > bookworm. Why it works in one and not the other, I have no idea.
> >
> >
>
> Disable support for IPv6 on the Sid server might help.

The VM's were created with virt-manager and default to IPv4. IPv6 is
not enabled. If I attempt a traceroute6 to an address: Network is
unreachable.