Date: Mon, 17 Jan 2000 10:37:21 -0500 (EST) From: Charles Youse <cyouse@paradox.nexuslabs.com> To: freebsd-hackers@freebsd.org Subject: PR kern/15656 Message-ID: <Pine.BSF.4.20.0001171035050.15159-100000@paradox.nexuslabs.com> In-Reply-To: <Pine.BSF.4.20.0001141142200.6263-100000@paradox.nexuslabs.com>
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In this PR, regarding IP header checksums, it's stated that a checksum of 0 is specified by the standard to be transmitted as all-1s (0xFFFF). (A checksum of all 0s is taken to mean that the transmitting host did not calculate a checksum.) Can anyone find a reference to this in the official docs, or perhaps find an explanation why we do indeed send 0'ed checksums? I've replicated this behavior on both 3.4-STABLE and 4.0-CURRENT, i386 and alpha. Thanks, Chuck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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