Re: 9.0-beta3 preferring ipv4 over ipv6 with ipv6_activate_all_interfaces="YES"

On 16.10.2011 21:29, Hiroki Sato wrote:
> Thomas Steen Rasmussen <thomas_at_gibfest.dk> wrote
>   in <4E9AA874.5070403_at_gibfest.dk>:
>
> th> On 14.10.2011 10:26, Thomas Steen Rasmussen wrote:
> th> > On 14-10-2011 10:09, Hiroki Sato wrote:
> th> >>  Thanks.  There is no problem with the source address selection.
> th>
> th> I don't understand this comment. I would say that I do
> th> have problems with the source address selection -
> th> otherwise it would be preferring ipv6, right ?
>
>  I mean the address selection is working properly.  Your problem is
>  because the default ipv6_prefer policy prefers IPv4 addresses when
>  the source IPv6 addr is in 2002::/16, the destination IPv6 address is
>  not in the same prefix, and IPv4 addresses can be used for the both.
>  It is not a bug of the selection mechanism.
>
>  The ipv6_prefer policy is defined in RFC 3484 2.1 and this policy
>  chooses a src IPv6 addr in 2002::/16 only if the dest addr is also in
>  the same prefix.  You can remove the special rule for 2002::/16 by
>  putting the following lines as /etc/ip6addrctl.conf and reboot the
>  system:
>
>  ::1/128          50      0
>  ::/0             40      1
>  #2002::/16       30      2
>  ::/96            20      3
>  ::ffff:0:0/96    10      4
>
>  By installing the above, IPv6 address will be preferred even if it is
>  in 2002::/16.
Hello,

I understand. Thank you for your time, and sorry for the noise.

Best regards

Thomas Steen Rasmussen