Pipe collision detected - how to merge tables?

[Dan Rimal]

Hello,

I have problem with pipe collision detected with bird.. i would like to 
have separate routing table for tranzit bgp peers and another table for 
internet exchange peers, but i need merge routes from this two tables to 
master table.. but there is problem with Pipe collision detected, 
because there is a lot of the same routes from both tables. Is there any 
way how to merge tables with aware of localpref or something like this? 
Maybe protocol preference?

Regards,

Dan