<div dir="ltr">As long as we have either DHCPv6 or RFC6106 we can make this work to enable IPv6 only for devices like phones, etc. Between DHCPv6 and RFC6106 we have most devices covered. A co-worker recently introduced me to the Linux package for RDNSS.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 24, 2016 at 11:37 AM, Matthew Huff <span dir="ltr"><<a href="mailto:mhuff@ox.com" target="_blank">mhuff@ox.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="EN-US">
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Remember, Android developers refuse to implement DHCPv6 and so can only get DNS server info from RDDNS (rfc6106). Since the number RA devices that support
RFC6106 are limited, this provides another problem set for Android devices and IPv6<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Courier New";color:#1f497d">----</span><span style="font-size:11.0pt;font-family:"Courier New";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Courier New";color:#1f497d">Matthew Huff | 1 Manhattanville Rd</span><span style="font-size:11.0pt;font-family:"Courier New";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Courier New";color:#1f497d">Director of Operations | Purchase, NY 10577</span><span style="font-size:11.0pt;font-family:"Courier New";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Courier New";color:#1f497d">OTA Management LLC | Phone: <a href="tel:914-460-4039" value="+19144604039" target="_blank">914-460-4039</a></span><span style="font-size:11.0pt;font-family:"Courier New";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Courier New";color:#1f497d">aim: matthewbhuff | Fax: <a href="tel:914-694-5669" value="+19146945669" target="_blank">914-694-5669</a></span><span style="font-size:11.0pt;font-family:"Courier New";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<div style="border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt">
<div>
<div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> ipv6-ops-bounces+mhuff=<a href="mailto:ox.com@lists.cluenet.de" target="_blank">ox.com@lists.cluenet.de</a> [mailto:<a href="mailto:ipv6-ops-bounces%2Bmhuff" target="_blank">ipv6-ops-bounces+mhuff</a>=<a href="mailto:ox.com@lists.cluenet.de" target="_blank">ox.com@lists.cluenet.de</a>]
<b>On Behalf Of </b>Brzozowski, John Jason<br>
<b>Sent:</b> Sunday, April 24, 2016 10:21 AM<br>
<b>To:</b> Eric Vyncke (evyncke) <<a href="mailto:evyncke@cisco.com" target="_blank">evyncke@cisco.com</a>><br>
<b>Cc:</b> Erik Kline <<a href="mailto:ek@google.com" target="_blank">ek@google.com</a>>; Jeroen Massar <<a href="mailto:jeroen@massar.ch" target="_blank">jeroen@massar.ch</a>>; IPv6 Ops list <<a href="mailto:ipv6-ops@lists.cluenet.de" target="_blank">ipv6-ops@lists.cluenet.de</a>></span></p><div><div class="h5"><br>
<b>Subject:</b> Re: Slow WiFi with Android Marshmallow & IPv6?<u></u><u></u></div></div><p></p>
</div>
</div><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Android is properly trying to query DNS over IPv6 unlike other devices/OSes. Most other mobile platforms still prefer the querying of DNS over IPv4 for A/AAAA RR query types.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">On Sun, Apr 24, 2016 at 10:17 AM, Eric Vyncke (evyncke) <<a href="mailto:evyncke@cisco.com" target="_blank">evyncke@cisco.com</a>> wrote:<u></u><u></u></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black">Jeroen, Erik and John,<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black">Thanks for the hint. I will advise the ISP to investigate any DNS issue (such as not returning an error message when requesting a non-existing AAAA) but I wonder
why it is linked to that specific Android Marshmallow version.<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black">-éric<u></u><u></u></span></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black">From:
</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:black"><<a href="mailto:ipv6-ops-bounces+evyncke=cisco.com@lists.cluenet.de" target="_blank">ipv6-ops-bounces+evyncke=cisco.com@lists.cluenet.de</a>> on behalf of "Brzozowski, John
Jason" <<a href="mailto:jjmb@jjmb.com" target="_blank">jjmb@jjmb.com</a>><br>
<b>Date: </b>Sunday 24 April 2016 at 16:01<br>
<b>To: </b>Erik Kline <<a href="mailto:ek@google.com" target="_blank">ek@google.com</a>><br>
<b>Cc: </b>Jeroen Massar <<a href="mailto:jeroen@massar.ch" target="_blank">jeroen@massar.ch</a>>, IPv6 Ops list <<a href="mailto:ipv6-ops@lists.cluenet.de" target="_blank">ipv6-ops@lists.cluenet.de</a>><br>
<b>Subject: </b>Re: Slow WiFi with Android Marshmallow & IPv6?<u></u><u></u></span></p>
</div>
<div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black"><u></u> <u></u></span></p>
</div>
<blockquote style="border:none;border-left:solid #b5c4df 4.5pt;padding:0in 0in 0in 4.0pt;margin-left:3.75pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black">My customers saw this issue at one point. We had issues with DNS over IPv6. Bad DNS and/or network configurations. Once these were fixed, the problems cleared
up.<br>
<br>
On Sunday, April 24, 2016, Erik Kline <<a href="mailto:ek@google.com" target="_blank">ek@google.com</a>> wrote:<u></u><u></u></span></p>
<blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in">
<p class="MsoNormal"><span style="font-size:10.5pt;font-family:"Calibri",sans-serif;color:black">On 24 April 2016 at 19:53, Jeroen Massar <<a href="mailto:jeroen@massar.ch" target="_blank">jeroen@massar.ch</a>> wrote:<br>
> On 2016-04-24 11:51, Eric Vyncke (evyncke) wrote:<br>
>> One of the first Belgian ISP to deploy IPv6 (VOO) is now recommending to<br>
>> its Android Marshmallow (6.0.1) users to deactivate IPv6 on their<br>
>> residential WiFi CPE... :-(<br>
>><br>
>> It appears that the issue is about IPv6 web sites/apps being really<br>
>> slower when using IPv6.<br>
><br>
> Is it a DNS issue maybe?<br>
><br>
> <a href="https://www.sixxs.net/faq/dns/?faq=ipv6slowconnect" target="_blank">https://www.sixxs.net/faq/dns/?faq=ipv6slowconnect</a><br>
><br>
> As that has been the general cause of "Disable IPv6!!!!!" around the<br>
> world for many years already.<br>
><br>
> Of course, without more details, little one really can say. Bug number<br>
> maybe?<br>
><br>
> Greets,<br>
> Jeroen<br>
><br>
<br>
Yeah, a link to something that eventually leads to a bug report would be good.<br>
<br>
Also if anybody has adb installed they can just try "adb shell dumpsys<br>
connectivity --diag" and see what the over-simplified diagnostic<br>
output shows.<u></u><u></u></span></p>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</div>
</blockquote>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div></div></div>
</div>
</div>
</blockquote></div><br></div>