Date: Sat, 13 May 2023 18:41:06 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 270859] dmesg message: mce0: a looped back NS message is detected during DAD Message-ID: <bug-270859-7501-FPuxW9TOTH@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-270859-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-270859-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D270859 Hans Petter Selasky <hselasky@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hselasky@FreeBSD.org --- Comment #3 from Hans Petter Selasky <hselasky@FreeBSD.org> --- Hi, The prints are related to IPv6 handling.=20 What is the state of the following sysctls: sys/dev/mlx5/mlx5_en/en.h: m(+1, u64, mc_local_lb, "mc_local_lb", "0: Local multicast loopback enabled 1: Disabled") \ sys/dev/mlx5/mlx5_en/en.h: m(+1, u64, uc_local_lb, "uc_local_lb", "0: Local unicast loopback enabled 1: Disabled") \ There is a feature in the NIC to loopback the certain packets, confusing the IPv6 stack in FreeBSD. This setting may also be in the hypervisor, and not = the VM. That's my best guess for the culpit of this issue. Sorry for late answer. --HPS --=20 You are receiving this mail because: You are the assignee for the bug.=
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