Zkusil jsem si pro zajimavost na pristupu na web nastavit preferenci ipv6 a zjistil jsem ze mi krome jineho prestal fungovat pristup na www.root.cz.
Podle toho co jsem zjistil mi pripada ze tam je cyklicky redirect.
Ma nekdo podobnou zkusenost ?
pc@epetcis:~/src/inetutils-1.5/telnet$ host -t AAAA www.root.cz
www.root.cz is an alias for root.cz.
root.cz has IPv6 address 2001:67c:68::76
pc@epetcis:~/src/inetutils-1.5/telnet$ ./telnet 2001:67c:68::76 80
Trying 2001:67c:68::76...
Connected to 2001:67c:68::76.
Escape character is '^]'.
GET / HTTP/1.0
HTTP/1.1 301 Moved Permanently
Date: Wed, 20 Jun 2012 12:03:32 GMT
Server: Apache/2.2.16 (Debian) mod_ssl/2.2.16 OpenSSL/0.9.8o
Location: http://www.iinfo.cz/
Content-Length: 337
Connection: close
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved
here.</p>
<address>Apache/2.2.16 (Debian) mod_ssl/2.2.16 OpenSSL/0.9.8o Server at web6.iinfo.cz Port 80</address>
</body></html>
Connection closed by foreign host.
pc@epetcis:~/src/inetutils-1.5/telnet$ host -t AAAA
www.iinfo.czwww.iinfo.cz has IPv6 address 2001:67c:68::86
pc@epetcis:~/src/inetutils-1.5/telnet$ ./telnet 2001:67c:68::86 80
Trying 2001:67c:68::86...
Connected to 2001:67c:68::86.
Escape character is '^]'.
GET / HTTP/1.0
HTTP/1.1 301 Moved Permanently
Date: Wed, 20 Jun 2012 12:04:00 GMT
Server: Apache/2.2.16 (Debian) mod_perl/2.0.4 Perl/v5.10.1
Location:
http://www.iinfo.cz/Vary: Accept-Encoding
Content-Length: 335
Connection: close
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>301 Moved Permanently</title>
</head><body>
<h1>Moved Permanently</h1>
<p>The document has moved
here.</p>
<address>Apache/2.2.16 (Debian) mod_perl/2.0.4 Perl/v5.10.1 Server at web8.iinfo.cz Port 80</address>
</body></html>
Connection closed by foreign host.
pc@epetcis:~/src/inetutils-1.5/telnet$
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