[afripv6-discuss] Internet broken - v6 :-(

John Hay jhay at meraka.org.za
Sat Sep 8 09:12:34 SAST 2007


Hi Frank,

On Sat, Sep 08, 2007 at 08:59:34AM +0300, Frank Habicht wrote:
> Hello all,
> 
> my internet is broken. (maybe few days now) and below are the reasons i
> send this to the v6 list.
> i wanted to get to the website of isc from my workstation and failed.
> 
> gentooserver ~ # tcptraceroute -n www.isc.org
> Selected device eth0, address 192.168.2.12, port 43422 for outgoing packets
> Tracing the path to www.isc.org (204.152.184.88) on TCP port 80 (http),
> 30 hops max
>  1  192.168.2.252  0.492 ms  0.209 ms  0.170 ms
> <snip - boring>
> 25  204.152.184.88 [open]  750.167 ms  807.353 ms  750.327 ms
> gentooserver ~ # traceroute6 www.isc.org
> traceroute to www.isc.org (2001:4f8:0:2::d) from
> 2002:c1dc:3a1b:1:20a:e6ff:fef0:a2b3, 30 hops max, 16 byte packets
>  1  2002:c1dc:3a1b:1:219:6ff:fe22:ed48
> (2002:c1dc:3a1b:1:219:6ff:fe22:ed48)  0.809 ms  0.712 ms  0.572 ms
>  2  2002:c058:6301:: (2002:c058:6301::)  608.218 ms *  603.301 ms
>  3  ssc-stk-px.occaid.net (2001:4830:d0::2)  584.238 ms *  653.467 ms
>  4  2002:c058:6301:: (2002:c058:6301::)  554.441 ms  595.575 ms  588.404 ms
>  5  ssc-stk-px.occaid.net (2001:4830:d0::2)  596.315 ms  576.923 ms 
> 587.58 ms
>  6  2002:c058:6301:: (2002:c058:6301::)  556.329 ms  615.539 ms *
>  7  ssc-stk-px.occaid.net (2001:4830:d0::2)  574.396 ms  823.758 ms 
> 615.745 ms
> 
> gentooserver ~ # whois 2001:4830:d0::2
> TowardEX Technologies International, Inc. TWDX-NET6BLK-ARIN-1
> (NET6-2001-4830-1)
>                                  
> 2001:4830:0000:0000:0000:0000:0000:0000 -
> 2001:4830:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
> OCCAID TWDX6-2001-4830-D0-1 (NET6-2001-4830-D0-1)
>                                  
> 2001:4830:00D0:0000:0000:0000:0000:0000 -
> 2001:4830:00D0:FFFF:FFFF:FFFF:FFFF:FFFF
> 
> # ARIN WHOIS database, last updated 2007-09-07 19:10
> # Enter ? for additional hints on searching ARIN's WHOIS database.
> gentooserver ~ # traceroute 192.88.99.1
> traceroute to 192.88.99.1 (192.88.99.1), 30 hops max, 38 byte packets
>  1  192.168.2.252 (192.168.2.252)  0.499 ms  0.365 ms  0.314 ms
>  2  router (192.168.2.253)  1.080 ms  1.047 ms  0.936 ms
>  3  193.219.197.69 (193.219.197.69)  72.968 ms  79.700 ms  70.562 ms
>  4  no-nit-tn-3.taide.net (193.219.192.13)  550.054 ms  583.660 ms 
> 545.919 ms
>  5  no-nit-tn-2.taide.net (193.219.193.132)  559.562 ms  587.836 ms 
> 577.374 ms
>  6  194.19.88.125 (194.19.88.125)  591.001 ms  584.428 ms  575.375 ms
>  7  195.204.25.30 (195.204.25.30)  609.538 ms  774.305 ms  650.732 ms
>  8  * * *
>  9  * * *
> 10  * * *
> 11  * * *
> 12  * * *
> 13  * * *
> 14  * * *
> 15  * *
> gentooserver ~ # dig -x 195.204.25.30
> 
> ; <<>> DiG 9.4.1-P1 <<>> -x 195.204.25.30
> ;; global options:  printcmd
> ;; Got answer:
> ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 27238
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
> 
> ;; QUESTION SECTION:
> ;30.25.204.195.in-addr.arpa.    IN      PTR
> 
> ;; AUTHORITY SECTION:
> 25.204.195.in-addr.arpa. 10674  IN      SOA     auth1.ns.enitel.net.
> registry.enitel.net. 2006092502 14400 3600 1209600 776
> 
> ;; Query time: 2 msec
> ;; SERVER: 192.168.2.5#53(192.168.2.5)
> ;; WHEN: Sat Sep  8 08:41:39 2007
> ;; MSG SIZE  rcvd: 108
> 
> gentooserver ~ #   #    nobody will guess content of  http://www.enitel.net/
> 
> 
> some weeks ago the trace to the anycasted 6to4 relay went (after norway)
> across the atlantic.
> Now no longer. Good.
> If only it worked...
> 
> I think in the "traceroute6" you'll see the routing loop.
> 
> the whois (of the 'real' v6 IP) includes "OCCAID" in the result.
> that rang a bell somewhere (dunno where).
> http://www.occaid.net/  gives me.... same, nothing, likely v6
> 
> So my colleagues IPv4 workstation shows the same site.
> And there's a news about ...."OCCAID and Consulintel"......
> and Frank thinks of Jordi.....
> 
> HELP!!!!!
> 
> need more info than above ?
> 
> Guessing: a routing loop on v6 side behind a 6to4 relay (used from
> TAIDE.NET - Norway)

I don't have an answer to your problem. From here I can do the traceroute
to www.isc.org and it also go through occaid. So either they fixed it or
only parts of their network is confused:

zibbi:~ > traceroute6 www.isc.org
traceroute6 to www.isc.org (2001:4f8:0:2::d) from 2001:4200:7000:1:206:5bff:fe55:cb09, 64 hops max, 12 byte packets
 1  builder  0.543 ms  0.614 ms  0.450 ms
 2  tnet-gif10-csir.v6.uni.net.za  25.829 ms  25.126 ms  29.262 ms
 3  bbr01-tu15.lndn01.occaid.net  176.857 ms  173.941 ms  174.280 ms
 4  bbr01-p1-0.nwrk01.occaid.net  244.746 ms  245.018 ms  244.287 ms
 5  bbr01-g1-0.asbn01.occaid.net  253.375 ms  250.160 ms  250.858 ms
 6  bbr01-g1-0.atln01.occaid.net  263.866 ms  264.144 ms  264.117 ms
 7  bbr01-p1-0.dlls01.occaid.net  293.761 ms  294.680 ms  298.632 ms
 8  dcr01-p1-5.lsan01.occaid.net  318.246 ms  318.468 ms  318.490 ms
 9  bbr01-g0-2.irvn01.occaid.net  318.145 ms  317.984 ms  318.004 ms
10  dcr01-p1-0.snjs02.occaid.net  328.116 ms  328.420 ms  328.242 ms
11  bbr01-f1-3.snfc02.occaid.net  332.369 ms  334.410 ms  332.659 ms
12  sf-guest.r2.sfo2.isc.org  335.224 ms  335.932 ms  345.842 ms
13  r2.r3.sfo2.isc.org  334.513 ms  337.242 ms  336.616 ms
14  r3-sfo2.r8.pao1.isc.org  367.950 ms  335.989 ms  337.661 ms
15  www.isc.org  338.198 ms  334.085 ms  337.254 ms
zibbi:~ >

John
-- 
John Hay -- John.Hay at meraka.csir.co.za / jhay at FreeBSD.org


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