I have been using the ethernet bridge psuedo device with 1.5ZB and 
1.5ZC.  It works great, but it doesn't seem to work with ipfilter. 
NetBSD and some spare G3's I have would make a great transparent 
firewall platform.  Are there plans for bridge(4) to work with ipfilter 
in the future?  I've seen this come up a few times in the archives, but 
not very recently.

Blair Stilwell