Archive Server Error

Mon Jun 14 21:02:54 UTC 2010

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On 14/06/2010 18:35:39, Andrew Wright wrote:
> On Mon, 14 Jun 2010, A. Wright wrote:
> 
>> Not a cache issue; clearing/restarting has no effect, and I have
>> seen the issue on several machines/browsers (FBSD/links, Mac/Firefox,
>> Mac/Safari).  I'm wondering about firewall/proxy -- I'll give it
>> a whirl when off-site later today.
> 
> Still nothing when checking from home.
> 
> I'm wondering about network topology -- it is dead when
> viewed from my server (138.73.29.51).
> 
> Traceroute returns this:
>     traceroute to wwwdyn.freebsd.org (69.147.83.38), 64 hops max, 52
> byte packets
>      1  138.73.29.254 (138.73.29.254)  0.618 ms  0.555 ms  0.541 ms
>      2  bfg-6506.mta.ca (138.73.101.254)  0.801 ms  0.311 ms  0.323 ms
>      3  198.164.29.73 (198.164.29.73)  0.855 ms  0.792 ms  0.507 ms
>      4  198.164.29.65 (198.164.29.65)  8.464 ms  8.194 ms  8.109 ms
>      5  142.166.176.1 (142.166.176.1)  124.732 ms  124.961 ms  114.841 ms
>      6  xe-1-0-0-200.dr02.fctn.nb.aliant.net (142.166.209.194)  129.638
> ms  117.374 ms  117.979 ms
>      7  so-1-3-0.cr02.stjh.nb.aliant.net (142.166.185.145)  126.063 ms 
> 123.422 ms  130.776 ms
>      8  te-0-2-5-0.cr01.hlfx.ns.aliant.net (142.166.181.137)  126.243
> ms  130.194 ms  123.887 ms
>      9  xe-3-0-0.bx01.asbn.va.aliant.net (207.231.227.6)  144.084 ms 
> 148.291 ms  146.069 ms
>     10  yho1.asbn.va.aliant.net (207.231.227.26)  146.966 ms  143.405
> ms  144.975 ms
>     11  ae-6.pat1.dce.yahoo.com (216.115.102.172)  140.772 ms  146.617
> ms  166.540 ms
>     12  as-0.pat2.che.yahoo.com (216.115.101.145)  166.338 ms  201.429
> ms  172.191 ms
>     13  as-1.pat2.dnx.yahoo.com (216.115.96.55)  206.685 ms  212.076 ms 
> 212.919 ms
>     14  as-0.pat1.pao.yahoo.com (216.115.101.128)  221.059 ms  220.649
> ms  222.264 ms
>     15  ae-1-d140.msr1.sp1.yahoo.com (216.115.107.53)  230.591 ms
>         ae-0-d140.msr1.sp1.yahoo.com (216.115.107.49)  235.904 ms
>         UNKNOWN-216-115-107-73.yahoo.com (216.115.107.73)  229.977 ms
>     16  * * gi-1-39.bas-b1.sp1.yahoo.com (98.136.16.61)  661.870 ms
>     17  wwwdyn.freebsd.org (69.147.83.38)  235.035 ms  238.288 ms 
> 229.476 ms
> 
> Could there be some bad cacheing on the server?  I'm guessing that
> "wwdyn" indicates some load balancing?

Possibly. I get subtly a different traceroute to yours once the traffic
gets into Yahoo's network.

lucid-nonsense:~:% traceroute lists.freebsd.org
traceroute to wwwdyn.freebsd.org (69.147.83.38), 64 hops max, 52 byte
packets
 1  gate (81.187.76.161)  1.221 ms  1.125 ms  1.048 ms
 2  2.b.gormless.thn.aaisp.net.uk (90.155.53.112)  27.369 ms  27.692 ms
 27.523 ms
 3  a.armless.thn.aaisp.net.uk (90.155.53.6)  28.955 ms  27.807 ms
27.771 ms
 4  lvl3gw.thn.packetexchange.net (212.187.197.193)  28.535 ms  28.301
ms  28.761 ms
 5  ae-34-52.ebr2.London1.Level3.net (4.69.139.97)  28.824 ms  29.236 ms
 28.486 ms
 6  ae-41-41.ebr1.NewYork1.Level3.net (4.69.137.66)  97.785 ms
    ae-44-44.ebr1.NewYork1.Level3.net (4.69.137.78)  97.880 ms  97.654 ms
 7  ae-91-91.csw4.NewYork1.Level3.net (4.69.134.78)  102.875 ms
    ae-71-71.csw2.NewYork1.Level3.net (4.69.134.70)  98.293 ms
    ae-81-81.csw3.NewYork1.Level3.net (4.69.134.74)  104.146 ms
 8  ae-94-94.ebr4.NewYork1.Level3.net (4.69.134.125)  98.448 ms
    ae-74-74.ebr4.NewYork1.Level3.net (4.69.134.117)  110.459 ms
    ae-84-84.ebr4.NewYork1.Level3.net (4.69.134.121)  98.013 ms
 9  ae-2-2.ebr4.SanJose1.Level3.net (4.69.135.185)  170.752 ms  167.141
ms  178.554 ms
10  ae-94-94.csw4.SanJose1.Level3.net (4.69.134.254)  166.887 ms
    ae-64-64.csw1.SanJose1.Level3.net (4.69.134.242)  166.901 ms  167.271 ms
11  ae-13-69.car3.SanJose1.Level3.net (4.68.18.5)  168.587 ms  351.785
ms  220.689 ms
12  4.71.112.14 (4.71.112.14)  176.247 ms  176.649 ms  175.371 ms
13  ae-0-d161.msr1.sp1.yahoo.com (216.115.107.59)  167.602 ms
    ae-1-d161.msr1.sp1.yahoo.com (216.115.107.63)  168.532 ms
    ae-1-d171.msr2.sp1.yahoo.com (216.115.107.87)  168.556 ms
14  gi-1-41.bas-b2.sp1.yahoo.com (209.131.32.33)  169.761 ms
    UNKNOWN-98-136-16-47.yahoo.com (98.136.16.47)  168.770 ms
    UNKNOWN-98-136-16-57.yahoo.com (98.136.16.57)  168.393 ms
15  wwwdyn.freebsd.org (69.147.83.38)  168.668 ms  168.849 ms  169.531 ms

Of course, this could very well be the reason why I get different
results to you.  I have IPv6 connectivity.

lucid-nonsense:~:% traceroute6 lists.freebsd.org
traceroute6 to wwwdyn.freebsd.org (2001:4f8:fff6::26) from
2001:8b0:151:1::1, 64 hops max, 12 byte packets
 1  b.gormless.thn.aaisp.net.uk  27.407 ms  26.967 ms  26.968 ms
 2  2001:7f8:4::50e8:1  26.974 ms  26.678 ms  27.100 ms
 3  10gigabitethernet1-1.core1.lon1.he.net  27.534 ms  27.328 ms  27.568 ms
 4  10gigabitethernet2-3.core1.ny4.ipv6.he.net  98.253 ms  96.154 ms
95.826 ms
 5  10gigabitethernet2-3.core1.ash1.ipv6.he.net  100.939 ms  101.851 ms
 105.118 ms
 6  10gigabitethernet1-2.core1.atl1.he.net  121.391 ms  122.689 ms
123.839 ms
 7  2001:470:0:ce::2  177.073 ms  177.019 ms  177.612 ms
 8  iana.r1.atl1.isc.org  177.253 ms  177.687 ms  178.085 ms
 9  int-0-5-0-1.r1.pao1.isc.org  179.098 ms  181.001 ms  180.969 ms
10  gig-2-1-0.r7.pao1.isc.org  177.290 ms  176.878 ms  176.504 ms
11  ipv6gw-isc.freebsd.org  178.322 ms  177.791 ms  177.021 ms
12  2001:4f8:fff6::26  179.067 ms  179.029 ms  178.631 ms

which looks like a completely different machine in a completely
different datacenter.

> There seems to be some strange configuration going on; if the
> IP is substituted:
>     http://69.147.83.38/pipermail/freebsd-questions/
> a "document not found" error results referring to a machine
> called "realcgi.sky.freebsd.org".

Uh, no -- that's perfectly normal name-based virtual hosting stuff.

Compare the following three -- note particularly the 'Content-Length'
header: 43417 bytes is the right answer.

lucid-nonsense:~:% HEAD -uSe -H 'host: lists.freebsd.org'
'http://69.147.83.38/pipermail/freebsd-questions/'
HEAD http://69.147.83.38/pipermail/freebsd-questions/
HEAD http://69.147.83.38/pipermail/freebsd-questions/ --> 200 OK
Connection: close
Date: Mon, 14 Jun 2010 20:54:52 GMT
Via: 1.1 varnish
Age: 0
ETag: "3b7660-a999-4c166f17"
Server: Apache/1.3.x Sausalito (Unix)
Content-Length: 43417
Content-Type: text/html
Last-Modified: Mon, 14 Jun 2010 18:04:07 GMT
Client-Date: Mon, 14 Jun 2010 20:54:53 GMT
Client-Peer: 69.147.83.38:80
Client-Response-Num: 1
X-Cache: MISS
X-Varnish: 1098273330

lucid-nonsense:~:% HEAD -uSe
'http://69.147.83.38/pipermail/freebsd-questions/'HEAD
http://69.147.83.38/pipermail/freebsd-questions/
HEAD http://69.147.83.38/pipermail/freebsd-questions/ --> 200 OK
Connection: close
Date: Mon, 14 Jun 2010 20:55:26 GMT
Via: 1.0 revproxy.sky.freebsd.org:2080 (squid/2.6.STABLE18)
Via: 1.1 varnish
Age: 80
Server: Apache
Content-Length: 7572
Content-Type: text/html
Client-Date: Mon, 14 Jun 2010 20:55:27 GMT
Client-Peer: 69.147.83.38:80
Client-Response-Num: 1
X-Cache: HIT
X-Varnish: 1098273401 1098273236

lucid-nonsense:~:% HEAD -uSe
http://lists.freebsd.org/pipermail/freebsd-questions/
HEAD http://lists.freebsd.org/pipermail/freebsd-questions/
HEAD http://lists.freebsd.org/pipermail/freebsd-questions/ --> 200 OK
Connection: close
Date: Mon, 14 Jun 2010 20:56:13 GMT
Via: 1.1 varnish
Age: 81
ETag: "3b7660-a999-4c166f17"
Server: Apache/1.3.x Sausalito (Unix)
Content-Length: 43417
Content-Type: text/html
Last-Modified: Mon, 14 Jun 2010 18:04:07 GMT
Client-Date: Mon, 14 Jun 2010 20:56:13 GMT
Client-Peer: 69.147.83.38:80
Client-Response-Num: 1
X-Cache: HIT
X-Varnish: 1098273480 1098273330

	Cheers,

	Matthew

- -- 
Dr Matthew J Seaman MA, D.Phil.                   7 Priory Courtyard
                                                  Flat 3
PGP: http://www.infracaninophile.co.uk/pgpkey     Ramsgate
JID: matthew at infracaninophile.co.uk               Kent, CT11 9PW
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