Re: [v6ops] new draft: draft-elkins-v6ops-multicast-virtual-nodes

[Nick Hilliard <[e-mail]>]

On 20/09/2014 15:15, Nalini Elkins wrote:
> Situation:  node A is on a subnet with 25 other nodes (B-Z)
>
> 1.  Node A sends 10 ICMP ping requests to FF02::1
> 2.  Nodes B through Z send Node A back ICMP 10 ping replies each
>
> Impact: with very little work by Node A, he has made B - Z do work &
> created network congestion with 250+ packets.

If the hosting provider has any sense, this will count towards node A's 
bandwidth allocation and if they persist in doing this, they will end up 
with a large bill as well as having trashed their connectivity.

The lesson is that if you shoot yourself in the foot, it will hurt.  If 
your network design is such that shooting yourself in the foot causes other 
hosts to be shot in the foot, then your network design may have a problem.

If you are a commercial hosting provider who provides third party shared 
tenancy networks which use this design, then you should expect problems of 
this sort.

Most hosting providers know these things and there is no need for the IETF 
to remind them.

Nick