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Re: draft-ietf-tcpimpl-prob-04.txt

Vern Paxson <vern@ee.lbl.gov> Fri, 07 August 1998 18:44 UTC

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Subject: Re: draft-ietf-tcpimpl-prob-04.txt
In-reply-to: Your message of Fri, 07 Aug 1998 17:41:35 PDT.
Date: Fri, 07 Aug 1998 11:44:39 -0700
From: Vern Paxson <vern@ee.lbl.gov>
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> 	Failing to clear reserved bits. At least one OS turns around
> 	received frames in some cases. It assumes the reserved bits were
> 	clear when they may not be.

If the bits are reserved, but not must-be-zero, then it seems a bit hard to
fault the OS.  Its peer is fiddling with bits that aren't supposed to be
fiddled with, and it's just (inadvertantly) cooperating with that.

If they're MBZ, though, then I agree it's a bug.

		Vern

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