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Re: Would someone help the secretariat figure out why they cannot route to teredo addresses?

2007-10-01 23:44:21
Le Monday 01 October 2007 20:50:00 ext Sam Hartman, vous avez écrit :
Hi.  I opened a ticket with the secretariat a few weeks ago
complaining that I cannot reach www.ietf.org using a teredo address
either allocated through the Microsoft Teredo server or the Debian
teredo server.

This is annoying because glibc's source address selection algorithm
seems to prefer teredo addresses to v4 addresses.  So, I get really
bad response times to www.ietf.org when using teredo.

To make a long short, that depends on your glibc version. As far as I 
remember, RFC3484 was implemented in version 2.4. Configurable policy in 
version 2.5, and Teredo in the default policy only very recently.

Because Teredo is not mentioned in RFC3484, I expect many other RFC3484 
implementations do have the same issue. Unfortunately, even if they don't 
have Teredo support themselves, they should still recognize the prefix for 
source address selection...
I did write an I-D to allocate one new prefix, but then I realized that the 
revised RFC3484 draft work already mentioned it, so I did not bother 
submitting it.

In your particular case, did you try to add

label           2001:0::/32     7
precedence      2001:0::/32     5

to /etc/gai.conf ?

-- 
Rémi Denis-Courmont

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