From nobody Sun May 01 01:39:57 2022 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 BAC0D1ABE816 for ; Sun, 1 May 2022 01:40:01 +0000 (UTC) (envelope-from bakul@iitbombay.org) Received: from mail-qv1-xf2d.google.com (mail-qv1-xf2d.google.com [IPv6:2607:f8b0:4864:20::f2d]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KrTS03k8Dz3M8r for ; Sun, 1 May 2022 01:40:00 +0000 (UTC) (envelope-from bakul@iitbombay.org) Received: by mail-qv1-xf2d.google.com with SMTP id kd11so8260365qvb.2 for ; Sat, 30 Apr 2022 18:40:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iitbombay-org.20210112.gappssmtp.com; s=20210112; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=hk0ekx3dROukg74LS7M6dLa2/aWJMmyAxSiPRv2DWbU=; b=qwmvy97eTfQiQm6RGH/7N97jQ6F72ODDi86ntryt/Fmvaws8iaQmAAGZATanY2at3J wZWj2pxCecogbIT6738AW07rnX2wzGVQCV3/FDEaj20udova/pHaow8EpTRX3rlN7Q0+ eyHwk0YdnlrLm+l+SLBdF174gxcbatTIKINL0Wu3td4igqsk5KHff6kMBrRkwW8W6gBL 8T2xNMrikiSG5fR7H2q1qe2iRT7js1oPd9RPAQMK/u5D/XKYQ8NXSnJivn1YWrLVVHjf 54iT83xhH57ruk2jNJyVS3/0nhJr3nTjZTPJdSr1X16pkbiKfda2IkLHr8YoewVmHPjv gnWg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=hk0ekx3dROukg74LS7M6dLa2/aWJMmyAxSiPRv2DWbU=; b=AUFC0gBd3VZPEsyv3xDlyMn00A8RRjn3M3Ib10ttVD1f0VtPfFRBTPGEIAH/pmilYB GTptgGBICWnYH0XuUXyzWWr+0Ui+RlFjfI08uyFAMrBCOlLyiG4Fh2ZXYQKLYHep8Vj1 /oB/HzM7zLBjpSfSuxcsUtMTU07n9Kv5M/y3CGYwv0EVGw5LZUwHf20zi410X+kAbkgh d8NX/Gs67GHZxbDTNR4VRZAdGbHf+7EmZa/SIe+KQF9C/xahaBVZ3+wweml6ICSDkqSD pMZnzK0I5++8L7P+wmsrWa/PWxnb7jFTc0nOQTrZ660o8RcMct348EoauEul/bcFn3J+ IW7w== X-Gm-Message-State: AOAM531LARvgCbSeGT+G3N7phnuFlyQ6kg1A3RWqxnhO4Su6F7bhcJFb ZS2ieBllwK/35rmIF5DJXX/8gw== X-Google-Smtp-Source: ABdhPJwMB+2cyft3DrhmhRHJe6ppLwcu71nDGoTGQFlejEekqF5NtIuyE5DOpwx9dMjz2p5sluXxFg== X-Received: by 2002:a05:6214:d46:b0:457:159b:b13 with SMTP id 6-20020a0562140d4600b00457159b0b13mr4908480qvr.34.1651369199801; Sat, 30 Apr 2022 18:39:59 -0700 (PDT) Received: from smtpclient.apple (107-215-223-229.lightspeed.sntcca.sbcglobal.net. [107.215.223.229]) by smtp.gmail.com with ESMTPSA id e188-20020a37b5c5000000b0069fc13ce225sm1103839qkf.86.2022.04.30.18.39.58 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 30 Apr 2022 18:39:59 -0700 (PDT) Content-Type: text/plain; charset=us-ascii 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 \(3696.80.82.1.1\)) Subject: Re: 60+% ping packet loss on Pi3 under -current and stable-13 From: Bakul Shah In-Reply-To: <20220430021207.GA7600@www.zefox.net> Date: Sat, 30 Apr 2022 18:39:57 -0700 Cc: freebsd-net@freebsd.org, freebsd-arm@freebsd.org Content-Transfer-Encoding: 7bit Message-Id: References: <8936EFD1-F1FD-48CF-9ED3-4D42595464DC@yahoo.com> <20220313193406.GA65568@www.zefox.net> <20220314010330.GA70447@www.zefox.net> <9FA3F874-2987-44A2-A987-F905E78CCA65@yahoo.com> <20220428023226.GA5666@www.zefox.net> <8A57B411-AA06-47F4-935D-EDF45D8DF0EC@yahoo.com> <70C2DF4B-D08B-491D-B7B5-1EAD0D1BF0E3@yahoo.com> <20220429005206.GA1171@www.zefox.net> <20220430021207.GA7600@www.zefox.net> To: bob prohaska X-Mailer: Apple Mail (2.3696.80.82.1.1) X-Rspamd-Queue-Id: 4KrTS03k8Dz3M8r X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=iitbombay-org.20210112.gappssmtp.com header.s=20210112 header.b=qwmvy97e; dmarc=none; spf=pass (mx1.freebsd.org: domain of bakul@iitbombay.org designates 2607:f8b0:4864:20::f2d as permitted sender) smtp.mailfrom=bakul@iitbombay.org X-Spamd-Result: default: False [-2.93 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[iitbombay-org.20210112.gappssmtp.com:s=20210112]; FREEFALL_USER(0.00)[bakul]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-net@freebsd.org]; DMARC_NA(0.00)[iitbombay.org]; TO_DN_SOME(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[iitbombay-org.20210112.gappssmtp.com:+]; NEURAL_HAM_SHORT(-0.94)[-0.936]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::f2d:from]; NEURAL_HAM_MEDIUM(-1.00)[-0.999]; MLMMJ_DEST(0.00)[freebsd-net]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On Apr 29, 2022, at 7:12 PM, bob prohaska wrote: > > Since about December of 2021 I've been noticing problems with > wired network connectivity on a pair of raspberry pi 3 machines > using wired network connections. One runs stable-13.1, the other > runs -current, both are up to date as of a few days ago. > > Essentially both machines fail to respond to inbound network > connections via ssh or ping after reboot. If I get on the > serial console and start an outbound ping to anywhere, both > machines respond to incoming pings with about a 65% packet > loss. Ssh connections are answered with delays of zero to > perhaps thirty seconds. Once connected ssh is usable but > erratic, with dropped characters, multi-second delays and > disconnects after random intervals from minutes to hours. > > There are five other Raspberry Pi's on the network. Three > Pi2's run 12.3-stable, one Pi2 runs -current and a Pi4 runs > -current. All have no problems pinging one another and out > of network, so there's nothing obviously wrong with the net. > The network is not routed, but rather a block of eight > addresses simply bridged from my ISP over DSL. > > It's been found that an image of 13.1-RC4 behaves similarly > on one Pi3 when on the public network but exhibits more normal > ping response when moved to a 192.168.1.n private network. On > the face of it, this seems significant, but I can't guess how. Suggest running tcpdump on the rpi3 to see what is going on when connected to the public vs private net.