Hello Takuma,
There is a problem with our router whereby it fails to keep its IPv6 configurations. The issue has been fixed now. Moreover, we put online an additional server with a fixed IPv6 address. At this time all instances of logback.qos.ch servers are configured with IPv6.
I can't guarantee that our router will not fail again. However, the IPv6 situation should be better now.
Best regards,
--
Ceki
On 10-Apr-17 12:50 PM, Takuma Tsutsumi wrote:
Hi Ceki,
Sorry to bother you again...
Unfortunately, it seems that the same problem is occurring.
Would you please investigate this?
Regards,
Takuma Tsutsumi
2017-03-31 8:37 GMT+09:00 Takuma Tsutsumi <t.tsutsumi.dev@gmail.com
<mailto:t.tsutsumi.dev@gmail.com >>:
Hi Ceki,
Thank you for your response.
It seems to be working.
Regards,
Takuma Tsutsumi
2017-03-31 14:09 GMT+09:00 Ceki Gulcu <ceki@qos.ch
<mailto:ceki@qos.ch>>:
I am afraid there is not much I can do regarding the DNS queries
since the provider for the host which does not have an AAAA
record does not support IPv6. Anyway, the router/IPv6 and the
Apache/IPv6 issues have been fixed.
Even http://ready.chair6.net/?url=https://logback.qos.ch
<http://ready.chair6.net/?url=https://logback.qos.ch > seems happy.
Best regards,
--
Ceki
On 3/30/2017 9:25 PM, Ceki Gulcu wrote:
Hi Takuma,
There were multiple issues involved.
1) There was a router issue which dropped all IPv6 packets.
2) there are two DNS servers for the qos.ch <http://qos.ch>
domain. They are configured
differently.
3) There is indeed an APache configuration problem which I
am trying to
identify.
--
Ceki
On 3/30/2017 6:52 AM, Takuma Tsutsumi wrote:
Hi,
If using a user-agent that prefer IPv6 such as the Squid
proxy, a
timeout may frequently occur on logback.qos.ch
<http://logback.qos.ch> <http://logback.qos.ch>.
It seems to me that the IPv6 site does not exist.
References:
- http://ready.chair6.net/?url=https://logback.qos.ch
<http://ready.chair6.net/?url=https://logback.qos.ch >
<http://ready.chair6.net/?url=https://logback.qos.ch
<http://ready.chair6.net/?url=https://logback.qos.ch >>
- http://ipv6-test.com/validate.php
<http://ipv6-test.com/validate.php >
<http://ipv6-test.com/validate.php
<http://ipv6-test.com/validate.php >>
In addition, it seems that AAAA records may not be
returned depending on
DNS query timing.
```
$ date; dig +noall +answer @8.8.8.8 <http://8.8.8.8>
<http://8.8.8.8> logback.qos.ch <http://logback.qos.ch>
<http://logback.qos.ch> aaaa
Thu Mar 30 22:34:03 DST 2017
logback.qos.ch <http://logback.qos.ch>
<http://logback.qos.ch>. 279 IN CNAME
yvo.qos.ch <http://yvo.qos.ch> <http://yvo.qos.ch>.
yvo.qos.ch <http://yvo.qos.ch> <http://yvo.qos.ch>.
279 IN AAAA
2a02:121e:969:1:201:c0ff:fe1c:5f7c <http://8.8.8.8> logback.qos.ch <http://logback.qos.ch>
$ date; dig +noall +answer @8.8.8.8 <http://8.8.8.8>
<http://logback.qos.ch> aaaa
Thu Mar 30 22:34:05 DST 2017
logback.qos.ch <http://logback.qos.ch>
<http://logback.qos.ch>. 299 IN CNAME
te.qos.ch <http://te.qos.ch> <http://te.qos.ch>.
```
Would you please investigate this?
Regards,
Takuma Tsutsumi
_______________________________________________ logback-user@qos.ch <mailto:logback-user@qos.ch>
logback-user mailing list
http://mailman.qos.ch/mailman/listinfo/logback-user
<http://mailman.qos.ch/mailman/listinfo/logback-user >
_______________________________________________ logback-user@qos.ch <mailto:logback-user@qos.ch>
logback-user mailing list
http://mailman.qos.ch/mailman/listinfo/logback-user
<http://mailman.qos.ch/mailman/listinfo/logback-user >
_______________________________________________ logback-user@qos.ch <mailto:logback-user@qos.ch>
logback-user mailing list
http://mailman.qos.ch/mailman/listinfo/logback-user
<http://mailman.qos.ch/mailman/listinfo/logback-user >
_______________________________________________
logback-user mailing list
logback-user@qos.ch
http://mailman.qos.ch/mailman/listinfo/logback-user
_______________________________________________
logback-user mailing list
logback-user@qos.ch
http://mailman.qos.ch/mailman/listinfo/logback-user