yum IPv6 repos

Bill Owens owens at nysernet.org
Tue Dec 27 20:58:19 CET 2011


On Tue, Dec 27, 2011 at 11:14:03AM -0800, Cameron Byrne wrote:
> On Tue, Dec 27, 2011 at 10:54 AM, Dick Visser <visser at terena.org> wrote:
> > I created a small script that parses this page, checks if the mirror
> > has an IPv6 address, and then outputs the 'enhanced' page:
> >
> > http://cajones.org/~visser/ubuntu-mirrors/
> >
> 
> I am pretty shocked that more mirrors in the USA are not IPv6 enabled,
> especially given that so many are at USA universities, which in theory
> should have easy access to IPv6 via Internet2, and likely their
> primary ISP as well.

IPv6 uptake amongst US universities isn't great - they have lots of v4 space, are busy with other things and have had their IT budgets squeezed quite a bit in the last couple of years. Of course that doesn't stop some of us from trying to convince them that they still need to do v6, we just don't have much traction. 

Incidentally, here I am on a regional network that has v6 transit from Internet2 and NLR, trying to reach cajones.org:

[cookiemonster:~] owens% sudo tcptraceroute6 cajones.org
traceroute to cajones.org (2001:610:148:dead::666) from 2620:f:1:1201:21b:63ff:fea4:4d92, port 80, from port 49823, 30 hops max, 60 bytes packets
 1  c7609-32c.nysernet.org (2620:f:1:1201::1)  0.000 ms  0.000 ms  0.000 ms 
 2  syr-7600-nnsyr.nysernet.net (2620:f:0:901::2)  0.000 ms  0.000 ms  0.000 ms 
 3  nyc-7600-syr-7600.nysernet.net (2620:f:0:734::3)  10.000 ms  0.000 ms  10.000 ms 
 4  nlr-nyc-7600.nysernet.net (2620:f:0:305::3)  0.000 ms  10.000 ms  0.000 ms 
 5  ge1-0-0.1113.jnr02.asd001a.surf.net (2001:610:f16:6016::17)  90.000 ms  90.000 ms  80.000 ms 
 6  ae2.500.jnr01.asd001a.surf.net (2001:610:e08:76::78)  90.000 ms  90.000 ms  100.000 ms 
 7  terena-router.customer.surf.net (2001:610:f01:8168::170)  80.000 ms  90.000 ms  80.000 ms 
 8  * * *         
 9  * * *         

versus v4:
[cookiemonster:~] owens% sudo tcptraceroute cajones.org
Selected device en0, address 199.109.32.135, port 56079 for outgoing packets
Tracing the path to cajones.org (192.87.30.17) on TCP port 80 (http), 30 hops max
 1  c7609.nysernet.net (199.109.32.254)  0.657 ms  0.236 ms  0.212 ms
 2  syr-7600-nnsyr.nysernet.net (199.109.9.1)  1.983 ms  0.254 ms  0.262 ms
 3  nyc-7600-syr-7600.nysernet.net (199.109.7.78)  6.100 ms  6.079 ms  6.072 ms
 4  nlr-nyc-7600.nysernet.net (199.109.4.158)  6.195 ms  6.157 ms  6.123 ms
 5  ge1-0-0.1113.jnr02.asd001.surf.net (145.145.166.17)  94.152 ms  92.918 ms  94.137 ms
 6  ae2.500.jnr01.asd001a.surf.net (145.145.80.78)  106.063 ms  93.239 ms  92.851 ms
 7  terena-router.customer.surf.net (145.145.18.170)  93.964 ms  94.909 ms  97.566 ms
 8  cajones.org (192.87.30.17) [open]  95.652 ms  94.183 ms  94.033 ms

There's something not right between us, on the v6 side. I don't know whether your script was actually testing connectivity or just pulling AAAA records, but if a test was involved it might be giving false negative answers. 

Bill.


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