Date: Wed, 19 Jul 2023 14:00:08 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 233683] IPv6 ND neighbor solicitation messages fail to arrive Message-ID: <bug-233683-7501-RIk6sQcYN2@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-233683-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-233683-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D233683 Andrey V. Elsukov <ae@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ae@FreeBSD.org --- Comment #15 from Andrey V. Elsukov <ae@FreeBSD.org> --- I suspect the problem could be related to some multicast filtering bug in N= IC driver. E.g. recently there was this patch: https://reviews.freebsd.org/D40= 860 It looks most of Intel NICs have this limitation. And when you have many IP= v6 addresses on the host, it is pretty easy overflow 128 entries. Usually when such problem happens, enabling PPROMISC mode should help, since kernel will receive all messages and filter them by self. Also some drivers have ability to enable ALLMULTI mode, when NIC accepts all multicast packets. Using this patch https://people.freebsd.org/~ae/allmulti.diff you can enable this mode as workaround. --=20 You are receiving this mail because: You are the assignee for the bug.=
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