[ppml] IPv6 flawed?

Iljitsch van Beijnum iljitsch at muada.com
Mon Sep 17 11:50:53 EDT 2007

On 17-sep-2007, at 17:42, Randy Bush wrote:

>> yeah...and I still wonder...if that is more a fear than anything.  I
>> would like to think the community has learned some leassons.

> wake me when we stop seeing rfc 1918 leaks of bgp, dns, ... and rfc  
> 1918
> space on traceroutes.

1. AFAIK, it is not "illegal" to number router interfaces out of 1918  
space (but you don't want to do that if you need to generate path MTU  
discovery messages)

2. DNS is escaping packets, not escaping routes = irrelevant

3. Leaking RFC 1918 prefixes in BGP only means that SOME people don't  
use good filters SOME of the time (probably all people some of the  
time / some people all of the time, but that aside), not that the  
state of route filtering is such that internet-wide connectivity can  
be had using address space that most people feel should be filtered

What happened to "I encourage my competitors to run their networks  
this way"?

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