Re: How to disable ipv6 in Lenny to avoid 1.0.0.0 in name resolution for AAAA type queries?
Hello Amogh,
As far as I know, there is not an easy way to disable ipv6 completely.
On a Dutch forum
(http://forum.pc-active.nl/viewtopic.php?p=171245&highlight=ipv6#171245)
According to some posters, glibc causes this undesirable effect.
Apparently there is no flag to be set to disable IPv6 lookups and when
you try to remove everything related to IPv6 in glibc, the API will
break; so that isn't an option either.
The guy here: http://www.webservertalk.com/archive291-2005-9-1103159.html
has solved it through adding the two lines to /etc/modprobe.conf, but
you did it in /etc/modprobe.d. I wouldn't see the difference, though.
Unless someone in the glibc community tries to solve this (i.e. adding
such a disableIPv6 flag in the source) I don't think you can totally
stop these IPv6 requests
Greetings
On 12/15/07, Amogh Hooshdar <amoghhooshdar@gmail.com> wrote:
> I am using Debian Lenny.
>
> $ uname -a
> Linux mylappy 2.6.18-4-486 #1 Wed May 9 22:23:40 UTC 2007 i686 GNU/Linux
>
> I changed the "alias net-pf-10 ipv6" line to the following two lines.
>
> alias net-pf-10 off
> alias ipv6 off
>
> After rebooting, I checked: lsmod | grep ipv6. Sure enough it is gone
> and the command gives nil output. But when I use bitchx or pidgin to
> connect to irc.freenode.net, I can still see DNS AAAA irc.freenode.net
> type of queries.As a result our DNS server that can't handle
> ipv6 returns 1.0.0.0 as the address and the clients don't work.
>
> (1) First I tried making these changes /etc/modprobe.d/aliases - Result:
> problem persists (Yes, I did reboot after the changes)
>
> (2) Next, I tried adding the two alias off lines in
> /etc/modeprobe.d/00local - Result: problem persists.
>
> (3) Finally, I added the line "blacklist ipv6" towards the top (5th line)
> of /etc/modeprobe.d/blacklist - Result: still the problem persists.
>
> I have also tried the following as per some suggestions:-
>
> 1. commenting out ipv6 related lines in /etc/hosts
> 2. /etc/init.d/avahi-daemon stop
>
> But they didn't help.
>
> I have succeeded to make Iceweasel work by setting
> network.dns.disableIPv6=true in about:config. But I need a OS-wide
> solution so that all my network apps do not send ipv6 DNS AAAA type
> requests and they work successfully.
>
> Please help me to disable ipv6 completely.
>
>
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