IPv6-misconfigurations

Thomas Schäfer thomas at cis.uni-muenchen.de
Mon Sep 28 15:57:04 CEST 2015


Hi,

I am observing sometimes very strange ipv6-misconfigurations.

The last two examples are:


www.hs-worms.de

LANG=C wget -6 www.hs-worms.de
converted 'http://www.hs-worms.de' (ANSI_X3.4-1968) -> 
'http://www.hs-worms.de' (UTF-8)
--2015-09-28 15:07:07--  http://www.hs-worms.de/
Resolving www.hs-worms.de (www.hs-worms.de)... 2001:4c80:81:a000::1d
Connecting to www.hs-worms.de 
(www.hs-worms.de)|2001:4c80:81:a000::1d|:80... failed: Connection timed out.
Retrying.

and

www.df.eu

LANG=C wget -6 www.df.eu
converted 'http://www.df.eu' (ANSI_X3.4-1968) -> 'http://www.df.eu' (UTF-8)
--2015-09-28 15:06:56--  http://www.df.eu/
Resolving www.df.eu (www.df.eu)... 2a00:1158:0:100::26
Connecting to www.df.eu (www.df.eu)|2a00:1158:0:100::26|:80... failed: 
Connection refused.

Both examples have an AAAA-record and so my assumption also IPv6.


The webmaster of hs-worms doesn't answer.

The webmaster of df I did not ask yet - he is a "hoster" and should have 
some monitoring tools.


My question: Is it right, that all these misconfigurations will fail on 
ISPs using DNS64/NAT64, except the people using 464xlat additionally?


If somebody knows the responsible persons...


Regards,
Thomas Schäfer



-- 

There’s no place like ::1

Thomas Schäfer (Systemverwaltung)
Ludwig-Maximilians-Universität
Centrum für Informations- und Sprachverarbeitung
Oettingenstraße 67 Raum C109
80538 München ☎ +49/89/2180-9706  ℻ +49/89/2180-9701



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