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[107.215.223.229]) by smtp.gmail.com with ESMTPSA id c14-20020ac853ce000000b002f39b99f67fsm3766562qtq.25.2022.05.02.00.44.49 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 May 2022 00:44:49 -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: <20220501181254.GA14961@www.zefox.net> Date: Mon, 2 May 2022 00:44:48 -0700 Cc: freebsd-net@freebsd.org, freebsd-arm@freebsd.org Content-Transfer-Encoding: quoted-printable Message-Id: <82F25CEE-9C9C-4CCD-9A59-A4448C37DA95@iitbombay.org> References: <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> <20220501181254.GA14961@www.zefox.net> To: bob prohaska X-Mailer: Apple Mail (2.3696.80.82.1.1) X-Rspamd-Queue-Id: 4KsFVW4Yscz4hLT X-Spamd-Bar: - Authentication-Results: mx1.freebsd.org; dkim=pass header.d=iitbombay-org.20210112.gappssmtp.com header.s=20210112 header.b=gjEhHFng; dmarc=none; spf=pass (mx1.freebsd.org: domain of bakul@iitbombay.org designates 2607:f8b0:4864:20::82a as permitted sender) smtp.mailfrom=bakul@iitbombay.org X-Spamd-Result: default: False [-1.29 / 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_SPAM_SHORT(0.71)[0.705]; 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:+]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::82a:from]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; 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 May 1, 2022, at 11:12 AM, bob prohaska wrote: > The "oui unknown" looks like some sort of failure..... Just ignore. tcpdump couldn't identify the vendor. Your tcpdump trace didn't give me anything useful. One suggestion is to use -n flag so that tcpdump doesn't do DNS resolution! Better, just use "-w file" so that you capture a trace and then can filter it different ways along with "-r file". Create separate files for when connected to the public vs private net. > Can you ping www.zefox.org? I have no outside vantage point. > There is still no outbound ping running and I would expect > you'll get no or very sparse reply. Looks like you are a sonic.net customer? If so see if you can get shell access on sonic. Then you can ping your hosts "from the outside"! Earlier I saw some packet loss. Right now I don't see any. > Thus far only the two Pi3s suffer from connectivity problems; Pi2s and = a Pi4 have > no difficulty on the same address block. Is there a switch for tcpdump = that will > limit records to relevant traffic? Otherwise it's a flood. When see packet loss, do you see any IO errors when you do "netstat -ni ue0"? Also check if your resolv.conf is set right as well as your gateway. > These results were obtained after standing idle overnight and > are rather different (in ways I don't understand) from behavior > immediately after reboot, I'll have to repeat as I learn more. >=20 > Thanks for reading, and any more suggestions! >=20 > bob prohaska >=20