[114071] in North American Network Operators' Group

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Re: Important New Requirement for IPv4 Requests

daemon@ATHENA.MIT.EDU (Robert E. Seastrom)
Thu Apr 30 08:12:32 2009

To: Randy Bush <randy@psg.com>
From: "Robert E. Seastrom" <rs@seastrom.com>
Date: Thu, 30 Apr 2009 08:12:27 -0400
In-Reply-To: <m2zle5piit.wl%randy@psg.com> (Randy Bush's message of "Sat,
	25 Apr 2009 11:35:38 +0900")
Cc: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org


Randy Bush <randy@psg.com> writes:

> mtu clue is also useful.  here on tokyo b-flets, and i would guess in
> many other ppoe environments, you need to tune or lose big-time.

But not difficult to beneficially MiM:

in pf:
scrub in on gre0 max-mss 1400
scrub out on gre0 max-mss 1400

in cisco-land:
ip tcp adjust-mss 1400

i'm sure the linux folks can offer up something similar...

-r



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