Your message dated Wed, 12 Dec 2012 10:54:52 +0100
with message-id <[email protected]>
and subject line Re: Bug#695749: whois: If IPv6 times out after connection,
IPv4 is not tried
has caused the Debian Bug report #695749,
regarding whois: If IPv6 times out after connection, IPv4 is not tried
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
695749: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=695749
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: whois
Version: 5.0.10
Severity: important
Tags: ipv6
Hi,
This is similar to bug #408096.
So my IPv6 setup is slightly broken it seems... but that is another
story. But it stops some connections staying open.
If a do a whois lookup of google.com it goes to whois.crsnic.net over
IPv6, gets a bit, then disconnects. Sample transcripts are below.
Now it is a bit weird that if half goes through, as it works fine on
firewall... just not in the internal network. IPv6 seems to work for
everything else... (indeed, a whois of google.co.uk which goes to
whois.nic.uk/2a01:618:8009:0:92d:f97:4c90:2b79 works fine...)
I don't rely on whois that much, just found it odd so thought I would
file a bug.
Cheers,
Hugh
$ whois --verbose google.com
Using server whois.crsnic.net.
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
Timeout.
$
$ telnet whois.crsnic.net 43
Trying 2001:503:7bbf:1060::74...
Connected to whois.crsnic.net.
Escape character is '^]'.
google.com
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
(nothing happens for minutes)
$ telnet whois.crsnic.net 43 -4
Trying 199.7.61.74...
Connected to WHOIS.ANYCAST-FO.FRA2.VERISIGN.COM.
Escape character is '^]'.
google.com
Whois Server Version 2.0
Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to http://www.internic.net
for detailed information.
GOOGLE.COM.ZZZZZZZZZZZZZZZZZZZZZZZZZZZ.LOVE.AND.TOLERANCE.THE-WONDERBOLTS.COM
<snip>
Registrars.Connection closed by foreign host.
$
-- System Information:
Debian Release: 6.0.6
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.32-5-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_NZ.UTF-8, LC_CTYPE=en_NZ.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages whois depends on:
ii libc6 2.11.3-4 Embedded GNU C Library: Shared lib
ii libidn11 1.15-2 GNU Libidn library, implementation
whois recommends no packages.
whois suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
On Dec 12, Hugh Davenport <[email protected]> wrote:
> This is similar to bug #408096.
But totally unrelated, because as the bug log explains, I implemented
proper timeouts on connections.
> So my IPv6 setup is slightly broken it seems... but that is another
> story. But it stops some connections staying open.
Your connectivity is broken, I think that it suffers from pMTU
discovery blackholing.
> If a do a whois lookup of google.com it goes to whois.crsnic.net over
> IPv6, gets a bit, then disconnects. Sample transcripts are below.
There is no reason why the program should attempt an IPv4 connection,
since the IPv6 one succeeded.
--
ciao,
Marco
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