Re: [RFC IPv6] Disabling IPv6 autoconf

[Hasso Tepper <hasso@estpak.ee>]

Olaf Kirch wrote:
> When the Xen people looked for a way to disable IPv6 autoconf of the
> bridge, they didn't find any way to do it without bringing up the
> device first (and thereby triggering DAD).

Because no /proc/sys/net/ipv6/conf/<interface> exist (yes, I know it's 
user visible effect)? This is just odd IMHO. I asked why it was changed 
and how userspace should behave now regarding this, but got no answer.

Simple scenario with GNU/Debian:

Computer is booted with no ethernet link. Ethernet interface should get 
address via autoconf. No link => no IPv6 addresses on interface => 
no /proc/sys/net/ipv6/conf/<interface>. Bootup scripts (procps.sh reading 
sysctl.conf existing in most of distributions AFAIK) can't set/get 
anything in /proc/sys/net/ipv6/conf/<interface> because it doesn't exist.

How userspace should behave now? Mandating daemon which listens interface 
events via netlink?


regards,

-- 
Hasso Tepper