PF: dynamic rules

[Victor V. Melnichenko]

Hi ALL!

I have some problem with PF.
I have pppoe server based on mpd.
What i want:
When client connect to the server some rules (e.g. altq ... priq ... 
etc) must be load and apply to the interface ng0 for example. When 
client disconnected from server this rules must be delete from rule-table.
In IPFW this things works fine...

Question: how can i do this in PF?

P.S. Sorry, i am new in this mail-list and my english is bad sometimes :(

Thanks!
-- 
With Best Regards,
Victor V. Melnichenko
VVM7-UANIC