From nobody Mon Sep 16 22:02:21 2024 X-Original-To: freebsd-net@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4X6zRb488nz5VvLv for ; Mon, 16 Sep 2024 22:02:35 +0000 (UTC) (envelope-from cross+freebsd@relay.distal.com) Received: from relay.wiredblade.com (relay.wiredblade.com [168.235.105.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4X6zRb2LkYz4KSl for ; Mon, 16 Sep 2024 22:02:35 +0000 (UTC) (envelope-from cross+freebsd@relay.distal.com) Authentication-Results: mx1.freebsd.org; none dkim-signature: v=1; a=rsa-sha256; d=relay.distal.com; s=mail; c=relaxed/relaxed; q=dns/txt; h=From:Subject:Date:Message-ID:To:CC:MIME-Version:Content-Type:Content-Transfer-Encoding:In-Reply-To:References; bh=XD50iJCX39kCSoWi6EZxuZ9rMwuuiDNuCkJsuOuxMeE=; b=tiOHv49urmVAMs0A6uvFtjXPDFqZUHUFbjnxeuMKKFglHH7n2FgMCHNuWsVRBaRm5UWcgj0Ofrl6ZI0E15HSeeqqTQJ/1Pwo0ILbnLDC7NHTUJBSF06sWT2cAMh4knjjgDcKXEasSHYn126ORVjd/SW5vJE9Yk2Ml5OJ51eJP64jsuvbUSNWXltv0QyqzggpkGy6PBr0HAUsM9vczvCInK77/VYuNjnJ8g8sfKdZSSlf+71TBYltHd+kBX tO2Bx1kFF3Wd6LecXHzxOL7HXv5fMsMjzKKartkiTttldRK4pZwr6WIZmoRMeq73OW9ILPOMekIBFRQqe3b244XKFoXA== Received: from mail.distal.com (pool-108-51-233-124.washdc.fios.verizon.net [108.51.233.124]) by relay.wiredblade.com with ESMTPSA (version=TLSv1.2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256) ; Mon, 16 Sep 2024 22:02:33 +0000 Received: from smtpclient.apple ( [2001:420:c0c4:1006::585]) by tristain.distal.com (OpenSMTPD) with ESMTPSA id 67953467 (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256:NO); Mon, 16 Sep 2024 18:02:32 -0400 (EDT) Content-Type: text/plain; charset=utf-8 List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3776.700.51\)) Subject: Re: IPv6 neighbor flaps for ISP router are occurring frequently From: Chris Ross In-Reply-To: Date: Mon, 16 Sep 2024 18:02:21 -0400 Cc: freebsd-net@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <6CFC398B-BC5C-4CFC-8733-8D9732B121CA@distal.com> References: <89F4F5A4-E3D9-4A43-84F6-908E3FA221A6@distal.com> <83BCC913-3375-4847-B720-5F06D76F6646@distal.com> To: Karl Denninger X-Mailer: Apple Mail (2.3776.700.51) X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; TAGGED_FROM(0.00)[freebsd]; ASN(0.00)[asn:3842, ipnet:168.235.104.0/22, country:US] X-Rspamd-Queue-Id: 4X6zRb2LkYz4KSl > On Sep 16, 2024, at 17:55, Karl Denninger wrote: > What is the revision on the kernel (rev and/or build date)? Build was from releng/14.1 back at the start of August. Looking now, I see that I=E2=80=99m behind by 24 commits, so maybe should try updating. > I THINK the only difference between you and I that is material is that = I'm running dhcp6c because dhcpcd, at least check, has some trouble = getting an allocation on cold boot (but does if restarted), on which = I've communicated with Roy, and I haven't seen anything new pop up on = the dhcpcd port yet thus haven't tried it again in the ~4 weeks. > I'm not seeing it here but I might not have all the patches you're = referring to on the gateway. If I'm not its easily enough rolled = forward here so I do. > I have a non-routing machine that is very current (rebuilt after the = recent zfs patch set hit) on stable/14 and it is not seeing that -- but = it is not a router, it is an end-node running rtsold and gets its IPv6 = address via SLACC from the router. I also tried to reproduce this on a couple of non-router machines and was not able to. =20 - Chris