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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Hi<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Based on your feedback I’ve built a probe with the IP address instead of the hostname and I now get “normal” results. There’s something weird about the DNS resolution
that is leading to these results.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">Thanks for your help.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New";color:#1F497D">AA<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> th@outlook.cz [mailto:th@outlook.cz]
<b>On Behalf Of </b>Tomáš Hetmer<br>
<b>Sent:</b> Tuesday, 21 de July de 2015 10:08<br>
<b>To:</b> Abreu, Alexandre, Vodafone Portugal; ripe-atlas@ripe.net<br>
<b>Subject:</b> RE: [atlas] 1msec RTT to ipv6.google.com?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">I didn't observe this exact thing, but I've seen some weird traceroute outputs on a Windows box behind a Comtrend ADSL router. The PTRs returned were completely wrong and I think there were
some other issues too.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Once we replaced the CPE everything went back to normal, so I'd check that first, maybe it's doing something funny to the IPv6 traffic.<br>
<br>
Best regards<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Tomáš Hetmer<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">> From: <a href="mailto:alexandre.abreu@vodafone.com">
alexandre.abreu@vodafone.com</a><br>
> To: <a href="mailto:ripe-atlas@ripe.net">ripe-atlas@ripe.net</a><br>
> Date: Tue, 21 Jul 2015 08:51:41 +0000<br>
> Subject: [atlas] 1msec RTT to ipv6.google.com?<br>
> <br>
> Hi all<br>
> <br>
> Anyone had any issues with wrong RTTs on IPv6 probes? I've setup a ping probe (ID#2143865) to ipv6.google.com and it's consistently giving 1msec RTT on the seismograph and the json file. It is physically impossible. This is the RTT I get on the CPE the probe
is connected to:<br>
> <br>
> SEQ HOST SIZE TTL TIME STATUS <br>
> 0 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> 1 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> 2 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> 3 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> 4 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> 5 2a00:1450:4003:806::200e 56 59 12ms echo reply <br>
> <br>
> Regards,<br>
> Alexandre Abreu<br>
> <o:p></o:p></span></p>
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