i tried adding a feature request in redmine but Chris closed it and replied "can already do in 2.0"
then i was reading the traffic shaper bounty thread and came across a similar post which talked about traffic between 2 subnets going through the shaper so i tried to implement the same but either im doing something wrong or there seems to be a bug, its all written down in this thread http://forum.pfsense.org/index.php/topic,29018.0.html