[c-nsp] BFD and no ip redirects ?

[Oliver Boehmer (oboehmer)]

> According to Ciscos config guide, *no ip redirects* need to be
configured
> for BFD
> 
> I'm trying to understand why this is required.
 
BFD echo packets are sent from a node towards its neighbor with its own
link address as IP destination addresses (so the neighbor sends it
back), which would trigger an ICMP redirect on the neighbor, and we
don't want/need this. I acutally don't think BFD breaks if you have ip
redirects enabled on the peer..

	oli