[PATCH 1/2] Add IP6_SADR support to Bird Core

[Toke Høiland-Jørgensen]

Ondrej Zajicek <santiago at crfreenet.org> writes:

> On Tue, Feb 06, 2018 at 04:57:43PM +0100, Toke Høiland-Jørgensen wrote:
>> What, we have to be nice to the users now? ;)
>> 
>> Fair enough, I'll add support for both types of channels. Should it be
>> possible to connect the same instance to both an ipv6 and and ipv6_sadr
>> channel type, or is it OK to enforce that there's only one of those
>> active?
>
> It is OK to enforce that there is only one of those active. How
> non-SADR-aware Babel should handle SADR routes? Is it mandatory
> sub-TLV, so they are ignored; or optional sub-TLV, so they are handled
> as regular routes?

It's mandatory, otherwise you can get routing loops. See
https://tools.ietf.org/html/draft-ietf-babel-source-specific-03#section-6

I figure the packet parser needs to be aware of whether it is configured
to support SADR routes and drop all source-specific updates if not...

-Toke