https://bugs.gentoo.org/show_bug.cgi?id=219400

If anyone is interested, it would be great if someone could try and 
reproduce it. I have looked at it briefly myself but (lazily) skipped 
over it because it involves a several things that I don't know much 
about - vifs, bridges, tun/tap, etc.

But, if someone could spare an hour or so to learn about these things, 
and then attempt to reproduce (documenting your work, so that others of 
us can try to reproduce too), then perhaps we can make some progress :)

Thanks,
Daniel