Re: recent RTADV changes

[David Young <dyoung%pobox.com@localhost>]

On Mon, Sep 21, 2009 at 01:17:46PM +0000, Michael van Elst wrote:
> 
> Recently the handling of IPv6 router advertisements was changed
> so that you can enable/disable this for each interface individually.
> 
> According to ndp(8):
>      accept_rtadv
>              Specify whether or not to accept Router Advertisement
>              messages received on the interface.  Note that the kernel
>              does not accept Router Advertisement messages unless the
>              net.inet6.ip6.accept_rtadv variable is non-0, even if the
>              flag is on.  This flag is set to 1 by default.
> 
> Unfortunately it is not set to 1 by default, but the global
> setting from net.inet6.ip6.accept_rtadv is copied when an
> interface is attached. The sysctl variable however is configured
> only in rc.d/network for ip6mode=autohost.

I think that the per-interface accept_rtadv setting should be a
tri-state---on, off, or use global setting---that defaults to using the
global setting.

Dave

-- 
David Young             OJC Technologies
dyoung%ojctech.com@localhost      Urbana, IL * (217) 278-3933