<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Jun 5, 2018 at 2:22 AM, Michael Richardson <span dir="ltr"><<a href="mailto:mcr@sandelman.ca" target="_blank">mcr@sandelman.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class=""><br>
Jonas Mårtensson <<a href="mailto:martensson.jonas@gmail.com">martensson.jonas@gmail.com</a>> wrote:<br>
    > Speaking about systemd defaults, they just enabled ecn for outgoing<br>
    > connections:<br>
<br>
    > <a href="https://github.com/systemd/systemd/pull/9143" rel="noreferrer" target="_blank">https://github.com/systemd/<wbr>systemd/pull/9143</a><br>
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</span>What about PLPMTU?  Do you think they might tweak that too?<br>
<br>
     net.ipv4.tcp_mtu_probing=2<br>
     (despite name, applies to IPv6 too)</blockquote><div><br></div><div>Maybe, suggest it on their github. But I would maybe propose instead <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">net.ipv4.tcp_mtu_probing=1.</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">/Jonas</span></div></div><br></div></div>