Date: Wed, 29 May 2002 17:38:43 +0300 From: Giorgos Keramidas <keramida@freebsd.org> To: Archie Cobbs <archie@dellroad.org> Cc: cseg@storming.org, stable@freebsd.org Subject: Re: Bad TCP checksum Message-ID: <20020529143843.GB2272@hades.hell.gr> In-Reply-To: <200205290100.g4T10MX89078@arch20m.dellroad.org> References: <20020523081803.GA1730@torment.storming.org> <200205290100.g4T10MX89078@arch20m.dellroad.org>
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[Please do not cross post; -stable is fine for this thread.] On 2002-05-28 18:00, Archie Cobbs wrote: > Fred Souza writes: > > Here's a piece of the output of tcpdump: > > > > 19:16:55.759657 me.50441 > somehost.http: S [bad tcp cksum fffe!] > > 2079216431:2079216431(0) win 65535 <mss 1452,nop,wscale 1,nop,nop, > > timestamp 797082 0> (DF) [tos 0x10] (ttl 96, id 41580, len 60) > > Sounds like it might be the delayed checksum code. What Ethernet > device driver are you using? Or like a kernel/userland compiled with excessive optimizations. What are your CFLAGS and COPTFLAGS in /etc/make.conf ? -- Giorgos Keramidas - http://www.FreeBSD.org keramida@FreeBSD.org - The Power to Serve To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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