pf firewall question

[adrian kok <adriankok2000_(_at_)_yahoo_(_dot_)_com_(_dot_)_hk>]

Dear all

Can pf have function to limit the server's bandwidth?
eg: assign 45M for the server A and 10M for the
serverB whatever it's running any services

If yes, can pf limit those servers by mac address
instead of the ip address

Thank you very much for your information