<div dir="ltr">Airport Express is setting the IPv6 Tunnel MTU to 1280 in all cases and it's not configurable, as far as I'm aware.<div><br></div><div>Andras</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 23, 2015 at 6:56 AM, Mikael Abrahamsson <span dir="ltr"><<a href="mailto:swmike@swm.pp.se" target="_blank">swmike@swm.pp.se</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On Fri, 23 Jan 2015, Lorenzo Colitti wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Thanks for reporting this. What was the effect? Connections just getting<br>
stuck? Was there fallback to IPv4?<br>
</blockquote>
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I would get all the CSS, comments etc, the player would start to try to load the video stream, but there would be no video loaded at all (ie the progress bar never moved).<span class=""><br>
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Personally I don't understand why everyone behind a manually-configured<br>
tunnel doesn't set the MTU in the RA to the MTU of the tunnel... but that's<br>
not an excuse for things not working.<br>
</blockquote>
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I did that before, but I can't do it in my Airport Express. I have been considering changing my IPv6 tunneling to another device.<br>
<br>
However, I have no clue why my OSX box thought it couldn't send 1350 byte sized UDP packets to the Internet. Could Google have sent me PTB=1280 from this host, so my OSX box thinks it can't send them unfragmented?<br>
<br>
Anyone know how I can check in OSX for what destinations it has received PTB packets and what the PMTU it think it has for these destionations?<div class="HOEnZb"><div class="h5"><br>
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-- <br>
Mikael Abrahamsson email: <a href="mailto:swmike@swm.pp.se" target="_blank">swmike@swm.pp.se</a><br>
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