Subject: RE: Resolution to open comments on ICMP Name Lookups

From: "Durand, Alain" <[email-masked]>
Date: Wed, 16 Nov 2005 16:22:04 -0500

> 
> Issue 3: Discovery of tunnel endpoints.
> 
> Resolution:
>       This change will be made and will be based on the text proposed
>       http://www1.ietf.org/mail-archive/web/ipv6/current/msg05674.html

I'm not sure this is such a good idea.

A) there are may kinds of tunnels, like IPv6/UDP/IPv4 or GRE, or L2TP
or...
Not sure limiting to Ipvx/Ipvy is that useful

B)A node can literally terminate gazillions of tunnels...
Think about a Mobile Agent or a softwire concentrator...
So ICMP name lookup would end up revealing information that
may not be adequate to reveal, but more, this could be turned into
a fabulous amplifier for DOS attack if ever the Home Agent, realizing
that all the addresses do not fit in a single packet, decide to respond

So, my recommendation is to not include this feature.

  - Alain.

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