itojun@iijlab.net writes:
] 	it was because ALTQ-on-1.6 inclueded its own packet classifier (which
] 	is very similar to packet filter).  in the way of ALTQ development,
] 	ALTQ dropped its classifier and chose to rely on packet tagging
] 	(provided by PF), because ALTQ classifier is basically a code
] 	duplication of packet filter.

So they decided to eliminate the ability to choose which packet
filter the end user may utilize for the sake of skipping out on some
work by piggybacking onto a codebase that is decidedly foreign to
the NetBSD tree.

-=erik.