Re: [PATCH 2/5] ipv4: Kill ip_rt_frag_needed().

From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Mon, 11 Jun 2012 13:16:59 +0200

It seems that we don't cache the learned pmtu informations
in some cases with ip_rt_frag_needed() removed. 

We need to find a way to implement this then, in such a way
that we have the route context used to send the ping packet
out.

Otherwise, it's impossible to record the information properly.