Comment # 5 on bug 1203735 from Fabian Vogt

(In reply to Larry Rainey from comment #4)
> This is a Vagrant software issue - please open a bug with them.
> 
> OpenSUSE had to support VirtualBox in X11 and Wayland - we have done this as
> with 6.1.38 by putting the support in virtualbox-guest-tools.

Exactly. That means that virtualbox-guest-tools needs to

Obsolete: virtualbox-guest-x11 < %{version}

as well as

Provides: virtualbox-guest-x11 = %{version}

but currently it only does the former.

> virtualbox-guest-x11 is no longer a valid OpenSUSE VirtualBox library.