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A user having trouble with python.org over ipv6. He assures us he
*can* connect to other sites with ipv6 and has provided some
diagnostic information.<br>
<br>
Michael<br>
<br>
-------- Original Message --------
<table class="moz-email-headers-table" border="0" cellpadding="0"
cellspacing="0">
<tbody>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject: </th>
<td>Re: Connection problems with IPv6 - persistent for more
than a month now</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Sun, 13 Feb 2011 08:49:32 -0500</td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Matthew Roy <a class="moz-txt-link-rfc2396E" href="mailto:matthew@royhousehold.net"><matthew@royhousehold.net></a></td>
</tr>
<tr>
<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:webmaster@python.org">webmaster@python.org</a></td>
</tr>
</tbody>
</table>
<br>
<br>
I'm pretty sure that this is not a local problem for two reasons.
First, your site _is_ reachable - it just isn't responding to HTTP
requests sent over IPv6. Second, as you said, I can reach other IPv6
sites just fine:
<div>
<br>
</div>
<blockquote class="webkit-indent-blockquote" style="margin: 0pt 0pt
0pt 40px; border: medium none; padding: 0px;">
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">matthew@smilebox:~$ wget -6 <a
moz-do-not-send="true" href="http://www.google.com">www.google.com</a></font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">--2011-02-13 08:37:53-- <a
moz-do-not-send="true" href="http://www.google.com/">http://www.google.com/</a></font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">Resolving <a class="moz-txt-link-abbreviated" href="http://www.google.com">www.google.com</a>... 2001:4860:8009::69</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">Connecting to <a moz-do-not-send="true"
href="http://www.google.com">www.google.com</a>|2001:4860:8009::69|:80...
connected.</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">HTTP request sent, awaiting response... 200 OK</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">Length: unspecified [text/html]</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">Saving to: `index.html.2'</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace"><br>
</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace"> [ <=>
] 8,844 39.8K/s in 0.2s </font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace"><br>
</font></div>
</div>
<div>
<div><font class="Apple-style-span" face="'courier new',
monospace">2011-02-13 08:37:53 (39.8 KB/s) - `index.html.2'
saved [8844]</font></div>
</div>
<div><font class="Apple-style-span" face="'courier new',
monospace"><br>
</font></div>
<div><font class="Apple-style-span" face="'courier new',
monospace">
<div>matthew@smilebox:~$ wget <a moz-do-not-send="true"
href="http://www.kame.net">www.kame.net</a></div>
<div>--2011-02-13 08:48:29-- <a moz-do-not-send="true"
href="http://www.kame.net/">http://www.kame.net/</a></div>
<div>Resolving <a class="moz-txt-link-abbreviated" href="http://www.kame.net">www.kame.net</a>...
2001:200:dff:fff1:216:3eff:feb1:44d7, 203.178.141.194</div>
<div>Connecting to <a moz-do-not-send="true"
href="http://www.kame.net">www.kame.net</a>|2001:200:dff:fff1:216:3eff:feb1:44d7|:80...
connected.</div>
<div>HTTP request sent, awaiting response... 200 OK</div>
<div>Length: unspecified [text/html]</div>
<div>Saving to: `index.html.3'</div>
<div><br>
</div>
<div> [ <=>
] 3,181 7.94K/s in 0.4s </div>
<div><br>
</div>
<div>2011-02-13 08:48:41 (7.94 KB/s) - `index.html.3' saved
[3181]</div>
<div><br>
</div>
</font></div>
</blockquote>
<div>
<div><br>
</div>
<div>I'm 98% sure this problem is on your end - if I had to hazard
a guess I'd say your webserver(s) or firewall are silently
dropping IPv6 connections to port 80. Could it still be a weird
browser or stack issue - sure, they're complicated software and
could be mis-configured or have bugs, but can *you* reach the
site over IPv6?</div>
<div><br>
</div>
<div>Matthew</div>
<br>
<div class="gmail_quote">On Sun, Feb 13, 2011 at 07:56, <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:webmaster@python.org">webmaster@python.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> Hello Matthew,<br>
<br>
We've had several reports of IPv6 connection problems in the
past. They have *all* turned out to be client difficulties
and not problems with <a moz-do-not-send="true"
href="http://python.org" target="_blank">python.org</a>. <br>
<br>
Can you please check connecting to other websites using
IPv6. If they work but <a moz-do-not-send="true"
href="http://python.org" target="_blank">python.org</a>
still fails come back to us.<br>
<br>
Many thanks,<br>
<br>
Michael Foord
<div>
<div class="h5"><br>
<br>
On 12/02/2011 21:46, Matthew Roy wrote:
<blockquote type="cite">When connecting over IPv6 all of
the <a moz-do-not-send="true"
href="http://python.org" target="_blank">python.org</a>
websites timeout - even though name resolution and
connectivity are working:
<blockquote style="margin: 0pt 0pt 0pt 40px; border:
medium none; padding: 0px;">
<div>
<div><font face="'courier new', monospace">matthew@smilebox:~$
wget -4 <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a></font></div>
</div>
<div>
<div><font face="'courier new', monospace">--2011-02-12
16:39:28-- <a moz-do-not-send="true"
href="http://www.python.org/"
target="_blank">http://www.python.org/</a></font></div>
</div>
<div>
<div><font face="'courier new', monospace">Resolving
<a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>...
82.94.164.162</font></div>
</div>
<div>
<div><font face="'courier new', monospace">Connecting
to <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>|82.94.164.162|:80...
connected.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">HTTP
request sent, awaiting response... 200 OK</font></div>
</div>
<div>
<div><font face="'courier new', monospace">Length:
18848 (18K) [text/html]</font></div>
</div>
<div>
<div><font face="'courier new', monospace">Saving
to: `index.html.1'</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">100%[======================================>]
18,848 95.8K/s in 0.2s </font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">2011-02-12
16:39:28 (95.8 KB/s) - `index.html.1' saved
[18848/18848]</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">matthew@smilebox:~$
wget -6 <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a></font></div>
</div>
<div>
<div><font face="'courier new', monospace">--2011-02-12
16:39:40-- <a moz-do-not-send="true"
href="http://www.python.org/"
target="_blank">http://www.python.org/</a></font></div>
</div>
<div>
<div><font face="'courier new', monospace">Resolving
<a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>...
2001:888:2000:d::a2</font></div>
</div>
<div>
<div><font face="'courier new', monospace">Connecting
to <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>|2001:888:2000:d::a2|:80...
connected.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">HTTP
request sent, awaiting response... </font></div>
</div>
</blockquote>
<div><br>
</div>
<div>Yet we have good DNS entries:</div>
<blockquote style="margin: 0pt 0pt 0pt 40px; border:
medium none; padding: 0px;">
<div>
<div><font face="'courier new', monospace">matthew@smilebox:~$
dig <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>
ANY</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;
<<>> DiG 9.7.1-P2 <<>>
<a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>
ANY</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
global options: +cmd</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;; Got
answer:</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
->>HEADER<<- opcode: QUERY,
status: NOERROR, id: 11917</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
flags: qr rd ra; QUERY: 1, ANSWER: 2,
AUTHORITY: 6, ADDITIONAL: 0</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
QUESTION SECTION:</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;<a
moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>.<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>ANY</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
ANSWER SECTION:</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>.<span
style="white-space: pre-wrap;"> </span>82745<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>A<span
style="white-space: pre-wrap;"> </span>82.94.164.162</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><a
moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>.<span
style="white-space: pre-wrap;"> </span>82744<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>AAAA<span
style="white-space: pre-wrap;"> </span>2001:888:2000:d::a2</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
AUTHORITY SECTION:</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://c0.org.afilias-nst.info"
target="_blank">c0.org.afilias-nst.info</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://a2.org.afilias-nst.info"
target="_blank">a2.org.afilias-nst.info</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://b0.org.afilias-nst.org"
target="_blank">b0.org.afilias-nst.org</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://b2.org.afilias-nst.org"
target="_blank">b2.org.afilias-nst.org</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://d0.org.afilias-nst.org"
target="_blank">d0.org.afilias-nst.org</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace">org.<span
style="white-space: pre-wrap;"> </span>106654<span
style="white-space: pre-wrap;"> </span>IN<span
style="white-space: pre-wrap;"> </span>NS<span
style="white-space: pre-wrap;"> </span><a
moz-do-not-send="true"
href="http://a0.org.afilias-nst.info"
target="_blank">a0.org.afilias-nst.info</a>.</font></div>
</div>
<div>
<div><font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
Query time: 0 msec</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
SERVER: 192.168.2.5#53(192.168.2.5)</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;;
WHEN: Sat Feb 12 16:42:20 2011</font></div>
</div>
<div>
<div><font face="'courier new', monospace">;; MSG
SIZE rcvd: 214</font></div>
</div>
</blockquote>
<div><br>
</div>
<div><br>
</div>
<div>And good connectivity:</div>
<blockquote style="margin: 0pt 0pt 0pt 40px; border:
medium none; padding: 0px;">
<div>
<div><font face="'courier new', monospace">matthew@smilebox:~$
ping6 <a moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>
-c 10</font></div>
</div>
<div>
<div><font face="'courier new', monospace">PING <a
moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>(<a
moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>) 56
data bytes</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=1 ttl=50 time=126 ms</font></div>
</div>
<div>
<div> <font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=2 ttl=50 time=118 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=3 ttl=50 time=122 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=4 ttl=50 time=135 ms</font></div>
</div>
<div>
<div> <font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=5 ttl=50 time=108 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=6 ttl=50 time=101 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=7 ttl=50 time=104 ms</font></div>
</div>
<div>
<div> <font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=8 ttl=50 time=106 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=9 ttl=50 time=101 ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">64
bytes from <a moz-do-not-send="true"
href="http://dinsdale.python.org"
target="_blank">dinsdale.python.org</a>:
icmp_seq=10 ttl=50 time=102 ms</font></div>
</div>
<div>
<div> <font face="'courier new', monospace"><br>
</font></div>
</div>
<div>
<div><font face="'courier new', monospace">--- <a
moz-do-not-send="true"
href="http://www.python.org" target="_blank">www.python.org</a>
ping statistics ---</font></div>
</div>
<div>
<div><font face="'courier new', monospace">10
packets transmitted, 10 received, 0% packet
loss, time 9013ms</font></div>
</div>
<div>
<div><font face="'courier new', monospace">rtt
min/avg/max/mdev =
101.504/112.742/135.351/11.542 ms</font></div>
</div>
</blockquote>
<div><br>
</div>
<div>If you need any additional information to help
resolve these issues please let me know.</div>
<div><br>
</div>
<div>Mathew</div>
<div><br>
</div>
</blockquote>
<br>
<br>
</div>
</div>
<pre cols="72">--
<a moz-do-not-send="true" href="http://www.voidspace.org.uk/" target="_blank">http://www.voidspace.org.uk/</a>
May you do good and not evil
May you find forgiveness for yourself and forgive others
May you share freely, never taking more than you give.
-- the sqlite blessing <a moz-do-not-send="true" href="http://www.sqlite.org/different.html" target="_blank">http://www.sqlite.org/different.html</a>
</pre>
</div>
</blockquote>
</div>
<br>
</div>
</body>
</html>