Specify Netmask rather than CIDR

[tim]

Hi all,
I want to load-balance two WAN links, based on destination IP (even or odd). Example.

10.10.10.1 -> WAN1
10.10.10.2 -> WAN2

I can specify similar in normal FreeBSD IPFW using 0.0.0.1 or 0.0.0.2.  But pfsense only allow /28 type netmask.

So, anyone know how I can do it

[sai]

do not post the same question many times - post an example of what you want to do to make things clearer