Date: Fri, 30 Apr 2021 08:31:29 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 255507] traceroute6 generates wrong UDP checksum Message-ID: <bug-255507-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D255507 Bug ID: 255507 Summary: traceroute6 generates wrong UDP checksum Product: Base System Version: 13.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: zlei.huang@gmail.com Environment: FreeBSD stable/13 host A and FreeBSD host B, connected via rou= ter. This can be reproduced. Steps to repeat: 1. traceroute6 -nq1 IP6_address_on_host_B 2. On host B, netstat -sp udp | grep 'bad checksum', it shows increasing statistic counter. It can be verified by tcpdump -npvi nic 'ip6 && udp' . Note: * If host A is directly connected with host B, then the UDP checksum is correct. * Some system other then FreeBSD seems not checking UDP checksum before generating ICMP time exceeded, thus to repeat it host B should be FreeBSD system. --=20 You are receiving this mail because: You are the assignee for the bug.=
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