why is ipv6 fixly compiled in latest F15 and all F16 kernels?

[Alchemist]

2012/4/8 Reindl Harald <h.reindl at thelounge.net>:
>
>
> Am 08.04.2012 13:27, schrieb Alchemist:
>> I have disabled ipv6 permanently since F14, and no problem. Just add
>> "install ipv6 /bin/true to /etc/modprobe.d/dist.conf"(old variant) or
>> "blacklist ipv6" to /etc/modprobe.d/blacklist.conf and
>> "net.ipv6.conf.all.disable_ipv6 = 1" to /etc/sysctl.conf. There is
>> nothing you cant control in your Fedora setup.
>
> but if you would take a look now you would recognize that
> this all does no longer work since we are no longer
> speak about a loadable module
>
> and that is why you have to add "ipv6.disable=1" as kernel parameter
> with recent kernel builds of F15/F16
>
>> net.ipv6.conf.all.disable_ipv6 = 1
>
> this is nice but only a part of the game and does
> not disbale ipv6 completly!
>
> try "netstat --numeric-hosts --numeric-ports --notrim --programs -u -t -l"
> and you will see ntpd and samba as example listen on the ipv6 loopback
> and also error messages in this context in several services if
> you do this after machine has bootet
>
> AGAIN: "ipv6.disable=1" as kernel-param is the only real way to
> disable ipv6 at all in recent kernels and after that even your
> proposed sysctl parameters will lead in errors because after
> disable it they are no longer present
>
>
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I have not ntpd or samba installed neither,  but i will take deeper
research. On my systems i use lsof -i6, and everything seems ok.