[c-nsp] Prioritize PING traffic to control plane

[Justin M. Streiner]

On Thu, 7 Aug 2014, Dumitru Ciobarcianu wrote:

> I know someone who at some point filtered icmp entirely from the
> customer's networks because of this and convinced the troublemakers that
> "they are more secure that way". The customer was happy because he was
> getting a consistent graph...

That becomes a much worse idea if/when IPv6 is involved.

jms