pf + ALTQ and DiffServ on FreeBSD 8.2

[alan yang]

Hello,

I am searching for DiffServ implementation for FreeBSD.  Looking at
FreeBSD 8.2 release, and wonder:

1)  how close pf + ALTQ could be used as DiffServ framework to develop
functions defined in DIFFSERV-MIB?
2)  altqd, altq.conf is not available, for ALTQ configuration those
have to be ported?
3)  SNMP diffserv MIB implementation, heard it would be available at
9.0 release?
4)  /dev/altq not exist for FreeBSD 8.0 system?

Thanks in advance for shedding lights!

Regards,
Alan