dhclient -6 and router advertisement M/O bits

David W. Hankins dhankins at isc.org
Fri Jan 29 20:42:15 UTC 2010


On Wed, Jan 27, 2010 at 10:48:17AM -0500, adrian mamolea wrote:
> Using Linux and ISC DHCP (currently I use Linux kernel 2.6.21 and
> dhclient 4.1.1), is there a way to implement the behavior described
> in  the quote above from RFC 4861?

Yes.  You basically need to use an "rtsold" that spawns dhclient -6.
We don't have a table of how to configure those, but I'd like it if
there were one somewhere.

Choose carefully however, because you want an rtsold that maintains
state; it has to remember if it started dhclient or not!  There are
some rtsold's that will spawn a new dhclient on every RA it receives,
there are others that spawn a new dhclient every time the M or O bit
toggles from different routers...it is a more complex space than might
seem obvious at first encounter.

-- 
David W. Hankins	BIND 10 needs more DHCP voices.
Software Engineer		There just aren't enough in our heads.
Internet Systems Consortium, Inc.		http://bind10.isc.org/



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