routing tools??

[Haisang Wu]

Hi, dear all:
  I used mrt as the routing daemon in my box with FreeBSD3.2+Kamev6 to run
eBGP and iBGP before. But After I changed FreeBSD3.2 into FreeBSD4.1, I found
that mrg cannot be correctly installed. Here is what in mrt installation guide:
"Because the IPv6 kernel implementations and API specifications are still in 
flux, MRT may not run on the latest IPv6 platforms."
  Could anyone tell me how to make mrt under FreeBSdD4.x, or recommend 
another good routing daemon? (BGP and others).
  Thanks to all of you.
                         Haisang