Virtual Network Interface Card

[Alex Zhang]

Hi all,
I just wonder that if there are virtual nic functionalities which
provides MAC address?
I need to run ISC DHCP Server on 4 different IP's within one sever,
however I have only 2 NICs connected to the server. I need different
MAC Address for those IPs in order to run it properly, so bxn0:l
styled cards won't work.  Solaris VNIC will just work for me, however
I would like to use FreeBSD,
Alex