FreeBSD and CARP

[Stuart Henderson]

On 2011/08/25 01:14, fredrik danerklint wrote:
> > As of now, even if a carp interface is in backup mode, bird announce that
> > prefix over ospf, which I don't want...
>
> I came over the following
> 
> http://www.mail-archive.com/bird-users@atrey.karlin.mff.cuni.cz/msg00753.html
> 
> and appling that patch do what I want.
> 
> Ondrej, 
> 
> Is there perhaps a possibility to make this patch as an configure option when 
> running bird?

OpenBSD's ospfd used to do that, but then it was changed to a
better method; a carp interface in BACKUP state still causes an
announcement over OSPF, but with a high metric, this avoids a
blackhole in the time between the previous carp MASTER going
down and the BACKUP taking over.