Bug#640465: 7.0 beta has troubles resolving some domains

[Marco d'Itri]

Package: iceweasel
Version: 7.0~b2-1
Severity: normal

Since I switched from 6.x to 7.0 beta, iceweasel often fails resolving
some domains and displays the "server not found" page.
This happens always for www.v6.facebook.com, often for ipv6.google.com
and from time to time for en.wikipedia.org (which does not have an AAAA
record, but FWIW has a CNAMEs chain).
I do not think that I have seen this for any other page.
If I click on "try again" the the page is loaded as usual, and I think
that the site keeps working as long as the domain stays in some internal
cache.

I run a local name server on my computer and I have verified that the
domain is in its cache.


-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (x86_64)

Kernel: Linux 3.0.0-1-amd64 (SMP w/2 CPU cores)
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages iceweasel depends on:
ii  debianutils         4.0.2     
ii  fontconfig          2.8.0-3   
ii  libc6               2.13-18   
ii  libgcc1             1:4.6.1-8 
ii  libgdk-pixbuf2.0-0  2.24.0-1  
ii  libglib2.0-0        2.28.6-1  
ii  libgtk2.0-0         2.24.6-1  
ii  libnspr4-0d         4.8.9-1   
ii  libstdc++6          4.6.1-8   
ii  procps              1:3.2.8-11
ii  xulrunner-7.0       7.0~b2-1  

iceweasel recommends no packages.

Versions of packages iceweasel suggests:
pn  libgssapi-krb5-2    1.9.1+dfsg-2
pn  mozplugger          <none>      
pn  ttf-lyx             2.0.0-1     
pn  ttf-mathematica4.1  <none>      
pn  xfonts-mathml       <none>      

Versions of packages xulrunner-7.0 depends on:
ii  libasound2                1.0.24.1-3      
ii  libatk1.0-0               2.0.1-2         
ii  libbz2-1.0                1.0.5-7         
ii  libc6                     2.13-18         
ii  libcairo2                 1.10.2-6.1      
ii  libdbus-1-3               1.4.14-1        
ii  libevent-1.4-2            1.4.14b-stable-1
ii  libfontconfig1            2.8.0-3         
ii  libfreetype6              2.4.6-2         
ii  libgcc1                   1:4.6.1-8       
ii  libgdk-pixbuf2.0-0        2.24.0-1        
ii  libglib2.0-0              2.28.6-1        
ii  libgtk2.0-0               2.24.6-1        
ii  libhunspell-1.2-0         1.2.14-4        
ii  libjpeg8                  8c-2            
ii  libmozjs7d                7.0~b2-1        
ii  libnspr4-0d               4.8.9-1         
ii  libnss3-1d                3.12.11-3       
ii  libpango1.0-0             1.28.4-3        
ii  libpixman-1-0             0.22.2-1        
ii  libreadline6              6.2-4           
ii  libsqlite3-0              3.7.7-2         
ii  libstartup-notification0  0.12-1          
ii  libstdc++6                4.6.1-8         
ii  libvpx0                   0.9.7.p1-1      
ii  libx11-6                  2:1.4.4-1       
ii  libxext6                  2:1.3.0-3       
ii  libxrender1               1:0.9.6-2       
ii  libxt6                    1:1.1.1-2       
ii  zlib1g                    1:1.2.3.4.dfsg-3

Versions of packages xulrunner-7.0 suggests:
ii  libcanberra0      0.28-1    
ii  libdbus-glib-1-2  0.94-4    
ii  libgconf2-4       2.32.4-1  
ii  libgnomeui-0      2.24.5-1  
ii  libgnomevfs2-0    1:2.24.4-1
ii  libnotify4        0.7.4-1   

-- Configuration Files:
/etc/iceweasel/iceweaselrc changed [not included]

-- no debconf information

-- 
ciao,
Marco
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