I just bumped my virtualbox to release 3.0.0 (from 2.2.4) and re-started my three (3) openBSD 4.5 (32-bit) guests.
Code:
-----(em0)openBSD1 openbsd2(em0) ------ (em0)openBSD3
(em1) ------- (em1)
All is in in order so far!
In fact, now with
VT-x/AMD-V: Enabled (and working), the openBSD-as-guests network performance "feels" faster. Too early to tell (quantify) for sure.
/S
N.B.: fresh out of the oven, 3.0.0, released 2009/6/29.