Re: IPV6 connection to www.debian.org
On 05-15 19:45, Simon Paillard wrote:
> Hi Osamu,
>
> On Tue, May 15, 2012 at 11:03:10PM +0900, Osamu Aoki wrote:
> > Recently, my fiber-connection ISP moved to serve IPV6. This has made me
> > access www.debian.org via IPV6.
> >
> > Somehow, I get very slow connection occasionally. I am suspecting
> > configuration problem on my side. (IPV6->IPV4 fall back issue?) But
> > this problem happens only with www.debian.org and less with some page
> > like http://www.debian.org/Bugs/ .
>
> The DNS TTL is 300s for www.debian.org, so the fact it's occasional
> certainly depends on the web server you connect to.
>
> First, please check which view is served for you:
> $ dig +short TXT www.debian.org @geo1.debian.org
>
> You can also check which ip you connect to.
>
> I've check v4 vs v6 latency/rates for all our webmirrors, nothing
> surprising/chocking.
>
BTW. What geolocation database is debian NS servers use for IPv6?
For example it thinks my tunnel which have endpoint in Frankfurt or
Amsterdam are in NA (North America), not EU. :(
For example for Hurrican Electrics it have lots of end points
and (based on my own info, info from webpage, dns and from telnet route-server.he.net.) for example
tserv6.fra1.ipv6.he.net (2001:470:0:6a::1, 216.66.80.30) serves a 2001:470:1f0b::/48 is located in Frankfurt, DE
near core1.fra1.he.net router: Interxion Frankfurt 216.218.252.174 2001:470:0:2a::1
tserv11.ams1.ipv6.he.net (2001:470:0:7e::1, 216.66.84.46) serves a 2001:470:1f15::/48 is located in Amsterdam, NL
near core1.ams1.he.net router: NIKHEF Amsterdam 216.218.252.173 2001:470:0:e::1
tserv28.waw1.ipv6.he.net (216.66.80.162) serves a 2001:470:71::/48 is located in Warsaw, PL
near core1.waw1.he.net router: PLIX Warsaw 216.218.252.189 2001:470:0:215::1
This servers also serves other /48 blocks, but they are rare, because
normally they allocate /64 subblocks from this /48 mentioned above.
`dig -6 -TXT www.debian.org @geo1.debian.org` thinks I'm in NA.
All servers listed here http://tunnelbroker.net/status.php and core routers using telnet router-server.he.net
I however do not know how to extract all prefixes for each server easly.
I know tunneled connections are problematic, but still as my IPv6
address is essentially behind router/server in Frankfurt, it should be
mapping me to Europe at least, not America.
--
Witold Baryluk
JID: witold.baryluk // jabster.pl
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