range of IPs in rc.conf

[lucian at lastdot.org]

Hi,

I need to use around 30 IPs on a freebsd 7 machine. Is there a way to 
avoid adding 30 lines of aliases in rc.conf? On RedHat/Centos I use this 
trick:
http://wiki.centos.org/TipsAndTricks/RangeOfIpsOnEthx

Anything similar available for FreeBSD?

Thanks