Date: Wed, 31 Mar 2021 13:05:23 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 254675] ICMP Unreach needfrag is broken in 13.0-RC4 Message-ID: <bug-254675-227-97GwUMId9a@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254675-227@https.bugs.freebsd.org/bugzilla/> References: <bug-254675-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254675 --- Comment #1 from Aleksandr Fedorov <afedorov@FreeBSD.org> --- This is very funny: root@GW_13RC4:~ # tcpdump -i lo0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on lo0, link-type NULL (BSD loopback), capture size 262144 bytes 15:32:30.655851 IP localhost > <GW_13RC4 public IP>: ICMP <remote public ho= st> unreachable - need to frag (mtu 1500), length 576 15:32:30.693492 IP localhost > <GW_13RC4 public IP>: ICMP <remote public ho= st> unreachable - need to frag (mtu 1500), length 576 15:32:30.713231 IP localhost > <GW_13RC4 public IP>: ICMP <remote public ho= st> unreachable - need to frag (mtu 1500), length 576 So, ICMP packets were sent, but from localhost to localhost. It seems that the 12.2-RELEASE checks the packet size before NAT, but the 13-RC4 after. --=20 You are receiving this mail because: You are the assignee for the bug.=
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