Date: Fri, 17 Mar 2023 15:30:14 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 270285] Network issue with very small frames (tcp, padded) Message-ID: <bug-270285-7501-krLu9TxMvF@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-270285-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-270285-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270285 --- Comment #8 from Michael Tuexen <tuexen@freebsd.org> --- Please note that the padding is NOT part of the IP packet. Therefore, no no= de should consider at as being part of the IP packet or even the TCP payload. I guess some node is looking at the Ethernet frame length to deduce the IP pa= cket length, instead of looking at the length field in the IP header. Network ca= rds did this wrong in the past and failed hardware checksum checks since they t= ook the padding into consideration where they shouldn't. This doesn't help here, but might give a hint where things can go wrong. --=20 You are receiving this mail because: You are the assignee for the bug.=
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