<div dir="ltr">If MTU discovery fails it's usually because a device is trying to seamlessly fragment. Set do not fragment on your device nearest the customer and that should solve it.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Mar 14, 2024 at 11:38 AM David Lang via LibreQoS <<a href="mailto:libreqos@lists.bufferbloat.net">libreqos@lists.bufferbloat.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">we are having some issues with ipv6, since you are a big ipv6 advocate, you may <br>
be able to help<br>
<br>
we get IPv6 via a hurricane electric tunnel and apparently PMTU discovery is <br>
misbehving. We've tried reducing the MTU a bit but still having issues.<br>
<br>
David Lang<br>
<br>
On Thu, 14 Mar 2024, David Lang via Make-wifi-fast wrote:<br>
<br>
> Date: Thu, 14 Mar 2024 10:19:21 -0700 (PDT)<br>
> From: David Lang via Make-wifi-fast <<a href="mailto:make-wifi-fast@lists.bufferbloat.net" target="_blank">make-wifi-fast@lists.bufferbloat.net</a>><br>
> Reply-To: David Lang <<a href="mailto:david@lang.hm" target="_blank">david@lang.hm</a>><br>
> To: Dave Taht <<a href="mailto:dave.taht@gmail.com" target="_blank">dave.taht@gmail.com</a>><br>
> Cc: Dave Taht via Starlink <<a href="mailto:starlink@lists.bufferbloat.net" target="_blank">starlink@lists.bufferbloat.net</a>>,<br>
> Make-Wifi-fast <<a href="mailto:make-wifi-fast@lists.bufferbloat.net" target="_blank">make-wifi-fast@lists.bufferbloat.net</a>>,<br>
> libreqos <<a href="mailto:libreqos@lists.bufferbloat.net" target="_blank">libreqos@lists.bufferbloat.net</a>><br>
> Subject: Re: [Make-wifi-fast] SCALE 21x conference this week results?<br>
> <br>
> On Thu, 14 Mar 2024, Dave Taht via Make-wifi-fast wrote:<br>
><br>
>> I am curious if anyone here is at scale this week? (it is in pasadena, and<br>
>> one of my favorite conferences - <a href="https://www.socallinuxexpo.org/scale/21x" rel="noreferrer" target="_blank">https://www.socallinuxexpo.org/scale/21x</a> )<br>
>> One of our core bufferbloat contributors (david lang) used to fq_codel the<br>
>> wifi there and they built custom boxes to manage the wifi in general<br>
>> (leveraging openwrt), I am not sure how they are doing it this year.<br>
><br>
> I am here, and we are still running openwrt, mostly on the wndr3800 APs <br>
> still. stop by the noc in the conf center room 215.<br>
><br>
> David Lang<br>
><br>
>> I always appreciate random users testing with speedtest,<br>
>> cloudflare,flent,irtt on the conference wifi, and would love results from<br>
>> this one especially. David published an update to this document a few years<br>
>> ago, but I cannot find it. This was the state of play in 2013.<br>
>> <br>
>> <a href="https://www.usenix.org/sites/default/files/conference/protected-files/wireless_paper_slides.pdf" rel="noreferrer" target="_blank">https://www.usenix.org/sites/default/files/conference/protected-files/wireless_paper_slides.pdf</a><br>
>> <br>
>> It was the best wifi on the planet then.<br>
>> <br>
>> ---------- Forwarded message ---------<br>
>> From: Google Calendar <<a href="mailto:calendar-notification@google.com" target="_blank">calendar-notification@google.com</a>><br>
>> Date: Thu, Mar 14, 2024 at 8:50 AM<br>
>> Subject: Notification: SCALE 21x @ Thu Mar 14 9am - Sun Mar 17, 2024 5:30pm<br>
>> (GMT-4) (Dave Taht)<br>
>> To: Dave Taht <<a href="mailto:dave.taht@gmail.com" target="_blank">dave.taht@gmail.com</a>><br>
>> <br>
>> <br>
>> SCALE 21x<br>
>> You have been invited by <a href="mailto:unknownorganizer@calendar.google.com" target="_blank">unknownorganizer@calendar.google.com</a> to attend an<br>
>> event named SCALE 21x on Thursday Mar 14 ⋅ 9am – Sunday Mar 17, 2024 ⋅<br>
>> 5:30pm (Eastern Time - New York).<br>
>> <br>
>> You have an upcoming event<br>
>> <br>
>> SCALE 21x<br>
>> Thursday Mar 14 ⋅ 9am – Sunday Mar 17, 2024 ⋅ 5:30pm (Eastern Time - New<br>
>> York)<br>
>> Locationhttps://<a href="http://www.linkedin.com/events/scale21x7123455134910574592" rel="noreferrer" target="_blank">www.linkedin.com/events/scale21x7123455134910574592</a><br>
>> View map<br>
>> <<a href="https://www.google.com/url?q=https%3A%2F%2Fwww.linkedin.com%2Fevents%2Fscale21x7123455134910574592&sa=D&source=calendar&usd=2&usg=AOvVaw3X1UEtve0I57MTQPZbLnZG" rel="noreferrer" target="_blank">https://www.google.com/url?q=https%3A%2F%2Fwww.linkedin.com%2Fevents%2Fscale21x7123455134910574592&sa=D&source=calendar&usd=2&usg=AOvVaw3X1UEtve0I57MTQPZbLnZG</a>><br>
>> Organizer<br>
>> <a href="mailto:unknownorganizer@calendar.google.com" target="_blank">unknownorganizer@calendar.google.com</a><br>
>> Guests<br>
>> Dave Taht <<a href="mailto:dave.taht@gmail.com" target="_blank">dave.taht@gmail.com</a>> - creator<br>
>> View all event details<br>
>> <<a href="https://calendar.google.com/calendar/event?action=VIEW&eid=XzZ0bG5hcXJsZTVwNmNwYjRkaG1qNHBocGVobW02b3BnNjlwbW1xcmtkZGlqMGQxcDY5b200ZTMzZWNyNjhwcjZkaGhta2NyZ2M1aDZvcHBpZWNxNmtkYjFlNHA2MmNwcDZoajc0cXBqZTFoNmUgZGF2ZS50YWh0QG0&tok=MzYjdW5rbm93bm9yZ2FuaXplckBjYWxlbmRhci5nb29nbGUuY29tNGI5YTMyMDY3NGRiMDIzNTk2Mzk2ZGYyN2ZjY2U1ZWIxN2E4MjEwNA&ctz=America%2FNew_York&hl=en&es=1" rel="noreferrer" target="_blank">https://calendar.google.com/calendar/event?action=VIEW&eid=XzZ0bG5hcXJsZTVwNmNwYjRkaG1qNHBocGVobW02b3BnNjlwbW1xcmtkZGlqMGQxcDY5b200ZTMzZWNyNjhwcjZkaGhta2NyZ2M1aDZvcHBpZWNxNmtkYjFlNHA2MmNwcDZoajc0cXBqZTFoNmUgZGF2ZS50YWh0QG0&tok=MzYjdW5rbm93bm9yZ2FuaXplckBjYWxlbmRhci5nb29nbGUuY29tNGI5YTMyMDY3NGRiMDIzNTk2Mzk2ZGYyN2ZjY2U1ZWIxN2E4MjEwNA&ctz=America%2FNew_York&hl=en&es=1</a>><br>
>> <br>
>> Invitation from Google Calendar <<a href="https://calendar.google.com/calendar/" rel="noreferrer" target="_blank">https://calendar.google.com/calendar/</a>><br>
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