[153418] in North American Network Operators' Group

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Re: IPv6 day and tunnels

daemon@ATHENA.MIT.EDU (Masataka Ohta)
Tue Jun 5 18:42:57 2012

Date: Wed, 06 Jun 2012 07:41:04 +0900
From: Masataka Ohta <mohta@necom830.hpcl.titech.ac.jp>
To: "Templin, Fred L" <Fred.L.Templin@boeing.com>
In-Reply-To: <E1829B60731D1740BB7A0626B4FAF0A65D374A8AC2@XCH-NW-01V.nw.nos.boeing.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org

Templin, Fred L wrote:

>> Infinity? You can't carry 65516B in an IPv4 packet.

>    2) For tunnels over IPv6, let infinity equal (2^32 - 1)

You can't carry a 65516B IPv6 packet in an IPv4 packet.

>> Instead, see the last two lines in second last slide of:
>>
>>     http://meetings.apnic.net/__data/assets/file/0018/38214/pathMTU.pdf
>>
>> It is a common condition.
> 
> Are you interested in only supporting tinygrams? IMHO,
> go big or go home!

Bigger packets makes it rather circuit switching than packet
switching. The way to lose.

Faster is the way to go.

						Masataka Ohta


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