> Have you ever looked at
> http://vde.sourceforge.net/
> ?

Thanks Chris for your hint, which triggered me to take a look at the
VDE project on Sourceforge.

Before posting, I was actually reading the documentation WIki of
Virtual Square (V^2) at http://wiki.virtualsquare.org . Currently, V^2
and VDE look to me like a very much more comprehensive and complex
project. Still, I am unsure about how much of the VDE code is actually
specific to (qemu under) Linux.

What I am after with vwire is only a tiny subset of that. At the
moment, I study the source of vether(4) and try to derive a simple
cross-over vwire pseudo-device from it to start with.

Which, of course, would be redundant and simply could be eliminated by
bridging all interfaces in a single bridge, unless the capability of
this simple wire is augmented by channel simulation/emulation
features. Then the vwire can link several bridges which run on the
same OpenBSD host and 'distort' transmissions between those bridges at
Link level (layer-2), for example introduce bit errors, cause bit &
frame loss, insert delay, etc.

Regards,
Rolf

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