From nobody Mon May 02 06:56:12 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 75CA4199AC2B; Mon, 2 May 2022 06:56:19 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [IPv6:2a01:4f8:c17:6c4b::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4KsDQT5SHRz4Zpb; Mon, 2 May 2022 06:56:17 +0000 (UTC) (envelope-from hps@selasky.org) Received: from [10.36.2.165] (unknown [176.74.213.87]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id B39C326021A; Mon, 2 May 2022 08:56:14 +0200 (CEST) Message-ID: <6f57cd1d-e1d4-5ca4-e301-2633c1d4c1fa@selasky.org> Date: Mon, 2 May 2022 08:56:12 +0200 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 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: 60+% ping packet loss on Pi3 under -current and stable-13 Content-Language: en-US To: bob prohaska , Mark Millard Cc: Bakul Shah , freebsd-net@freebsd.org, freebsd-arm@freebsd.org References: <70C2DF4B-D08B-491D-B7B5-1EAD0D1BF0E3@yahoo.com> <20220429005206.GA1171@www.zefox.net> <20220430021207.GA7600@www.zefox.net> <20220501181254.GA14961@www.zefox.net> <20220501232757.GA15446@www.zefox.net> <2F4599BF-EEDA-4D08-AB6E-7AA9F410B2C5@yahoo.com> <20220502011312.GA15807@www.zefox.net> From: Hans Petter Selasky In-Reply-To: <20220502011312.GA15807@www.zefox.net> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4KsDQT5SHRz4Zpb X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 2a01:4f8:c17:6c4b::2 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-3.27 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net:c]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; RCPT_COUNT_FIVE(0.00)[5]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.97)[-0.972]; MLMMJ_DEST(0.00)[freebsd-arm,freebsd-net]; FREEMAIL_TO(0.00)[www.zefox.net,yahoo.com]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:2a01:4f8::/32, country:DE]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On 5/2/22 03:13, bob prohaska wrote: > On Sun, May 01, 2022 at 05:10:59PM -0700, Mark Millard wrote: > [reply at end] >> On 2022-May-1, at 16:27, bob prohaska wrote: >> >>> On Sun, May 01, 2022 at 12:58:45PM -0700, Mark Millard wrote: >>>> >>>> Looks like there is some problem getting past >>>> gig1-1-1.gw.davsca11.sonic.net . >>>> >>> >>> That seems independent of my own internal connection problems, >>> but worth taking up with my ISP on Monday. Meanwhile, can you >>> ping any other hosts in the 50.1.20.31-24 range? All are up >>> at the moment. Hosts 28 and 24 are the troublemakers. >>> >>> If anybody cares there's an ascii-art network diagram at >>> http://www.zefox.net/~fbsd/netmap >>> >>> Not sure it'll survive the mailing list, but here goes: >>> dsl_modem-----switch---------router-----lan-------wifi-----pi4_workstation >>> | | | >>> | | |---Mac workstation >>> | | >>> | |------printer >>> ------------------| >>> | >>> |------50.1.20.30 ns1.zefox.net Pi2 12.3 usb-serial----50.1.20.27 >>> |------50.1.20.29 ns2.zefox.net Pi2 12.3 usb-serial----50.1.20.30 >>> |------50.1.20.27 www.zefox.net Pi2 12.3 usb-serial----50.1.20.26 >>> |------50.1.20.26 www.zefox.com Pi2 -current usb-serial---50.1.20.24 >>> |------50.1.20.24 pelorus.zefox.org Pi3 13.1 usb-serial---50.1.20.28 >>> switch >>> |------50.1.20.25 nemesis.zefox.com Pi4 -current usb-serial---50.1.20.29 >>> |------50.1.20.28 www.zefox.org Pi3 -current usb-serial----50.1.20.25 >> >> >> For ns1.zefox.net there is no problem and >> it looks like: >> >> My traceroute [v0.95] >> amd64_ZFS (192.168.1.120) -> ns1.zefox.net (50.1.20.29) 2022-05-01T16:52:27-0700 >> Keys: Help Display mode Restart statistics Order of fields quit >> Packets Pings >> Host Loss% Snt Last Avg Best Wrst StDev >> 1. 192.168.1.1 0.0% 53 1.2 0.8 0.1 1.4 0.4 >> 2. 172.30.26.67 0.0% 53 11.8 25.0 11.8 61.0 11.4 >> 3. 68.85.243.125 0.0% 53 10.0 10.0 7.7 46.9 5.3 >> 4. 96.216.60.165 0.0% 53 8.8 9.3 7.8 12.1 0.9 >> 5. 68.85.243.197 0.0% 53 8.6 13.2 8.6 28.3 4.2 >> 6. be-36231-cs03.seattle.wa.ibone.comcast.net 0.0% 53 15.3 14.8 13.0 16.9 1.0 >> 7. be-2312-pe12.seattle.wa.ibone.comcast.net 0.0% 53 16.2 15.9 12.9 59.8 6.5 >> 8. (waiting for reply) >> 9. be3717.ccr22.sfo01.atlas.cogentco.com 0.0% 53 29.8 30.9 26.5 97.9 10.1 >> 10. be2430.ccr31.sjc04.atlas.cogentco.com 0.0% 53 29.0 29.0 26.6 39.3 1.8 >> 11. 38.104.141.82 0.0% 53 28.9 33.8 26.1 115.0 17.0 >> 12. 0.xe-0-3-0.scrm-gw1.scrmca01.sonic.net 0.0% 53 32.1 31.3 29.2 33.9 1.0 >> 13. 0.xe-0-0-0.cr1.scrmca13.sonic.net 0.0% 53 30.5 32.1 29.2 57.6 4.3 >> 14. gig1-1-1.gw.wscrca11.sonic.net 0.0% 53 31.8 32.0 28.8 43.7 2.0 >> 15. gig1-1-1.gw.davsca11.sonic.net 0.0% 52 31.0 32.4 30.2 38.4 1.4 >> 16. ns1.zefox.net 0.0% 52 51.4 51.1 49.8 53.4 0.8 >> >> ns2.zefox.net and others got a 17. instead of >> a 16. An example is: >> >> My traceroute [v0.95] >> amd64_ZFS (192.168.1.120) -> ns2.zefox.net (50.1.20.30) 2022-05-01T16:58:45-0700 >> Keys: Help Display mode Restart statistics Order of fields quit >> Packets Pings >> Host Loss% Snt Last Avg Best Wrst StDev >> 1. 192.168.1.1 0.0% 55 0.3 0.9 0.1 1.4 0.4 >> 2. 172.30.26.66 0.0% 55 13.5 26.4 10.4 54.7 10.1 >> 3. 68.85.243.77 0.0% 55 10.5 9.1 7.9 10.5 0.6 >> 4. 24.124.129.106 0.0% 54 8.3 9.5 8.2 13.4 1.0 >> 5. 96.216.60.165 0.0% 54 8.8 9.8 7.8 22.8 2.2 >> 6. 68.85.243.197 0.0% 54 17.1 15.1 9.0 37.3 5.9 >> 7. be-36241-cs04.seattle.wa.ibone.comcast.net 0.0% 54 15.2 15.0 13.2 17.8 0.9 >> 8. be-2412-pe12.seattle.wa.ibone.comcast.net 0.0% 54 15.0 14.8 13.2 17.1 1.0 >> 9. (waiting for reply) >> 10. be2075.ccr21.sfo01.atlas.cogentco.com 0.0% 54 28.4 29.2 26.9 36.8 1.4 >> 11. be2379.ccr31.sjc04.atlas.cogentco.com 0.0% 54 29.8 30.0 27.3 84.2 7.6 >> 12. 38.104.141.82 0.0% 54 28.6 33.7 27.5 105.5 16.2 >> 13. 0.xe-0-3-0.scrm-gw1.scrmca01.sonic.net 0.0% 54 31.6 31.4 29.5 33.8 0.9 >> 14. 0.xe-0-0-0.cr1.scrmca13.sonic.net 0.0% 54 31.1 32.1 29.1 52.9 3.4 >> 15. gig1-1-1.gw.wscrca11.sonic.net 0.0% 54 31.2 31.9 30.0 34.1 0.9 >> 16. gig1-1-1.gw.davsca11.sonic.net 0.0% 54 33.3 32.6 30.8 45.8 2.1 >> 17. ns2.zefox.net 0.0% 54 52.5 51.4 49.1 54.9 1.2 >> >> The routing need not be the same from one >> try to the next. >> >> www.zefox.net is similar. >> www.zefox.com is similar. >> pelorus.zefox.org is similar. >> nemesis.zefox.com is similar. >> www.zefox.org is similar. >> >> Notably www.zefox.org was what I tried and >> reported on before that had the failures. >> >> I observed a initial connection sequence once >> for pelorus.zefox.org where it briefly displayed >> something like (not captured, just from memory): >> >> 16. gig1-1-1.gw.davsca11.sonic.net >> 17. (waiting for reply) >> 18. (waiting for reply) >> 19. pelorus.zefox.org >> >> before changing to >> >> 16. gig1-1-1.gw.davsca11.sonic.net >> 17. ns2.zefox.net >> >> That may be normal but usually timed such that I >> would not usually see it. >> >> But it might actually be evidence of a stage that >> the leads to the overall failure by never getting >> past the: >> >> 16. gig1-1-1.gw.davsca11.sonic.net >> 17. (waiting for reply) >> 18. (waiting for reply) >> 19. WHATEVER >> >> in some cases. >> >> However, in the above the below worked fine: >> >> 50.1.20.24 pelorus.zefox.org Pi3 13.1 usb-serial---50.1.20.28 >> 50.1.20.28 www.zefox.org Pi3 -current usb-serial----50.1.20.25 >> >> What changed? > > I restarted an outgoing ping so I could access those hosts via ssh, > to bring up a serial console connection to the next host in the "ring". > Usually I simply ping 50.1.20.31 (my router) but at least in the past > it did not matter what the destination was. In one case I tried an > unused address. That makes the role of a distant host somewhat > baffling. > > Thanks for checking! > > bob prohaska Hi, Did you try to force the link mode to 100MBit/s ? --HPS