Bird 1.5.0: protocol 'direct' looses routes

[Andrew]

16.06.2015 14:42, Ondrej Zajicek пишет:
> On Tue, Jun 16, 2015 at 01:39:24PM +0300, Andrew wrote:
>> 13.06.2015 10:43, Andrew пишет:
>>> Hi all.
>>>
>>> I'm testing bird 1.5.0 on PPPoE BRAS, and today noticed that sometimes it
>>> looses routes. For ex., today it looses near 5 networks of 103 total
>>> (before restart - it has 98 routes, after - 103)
>>>
>>> Possibly this may be related with tunnel session hangup - when user
>>> reconnects with same IP and then old session is dropped, bird may loose
>>> this route while route is present in system. But I'm not sure about this.
>> Trouble is confirmed on test machine.
>>
>> Testing result:
> Hi
>
> Thanks for the example, it is very descriptive. The problem here is that
> 'direct' protocol is a stateless translation of address announcements to
> route announcements, but routing tables do not consider interface as part
> of route key, therefore only one route for a prefix is remembered and
> later removed. We could fix that in a similar way how BGP add path is
> implemented - using separate route source per iface id. In that case, if
> you have the same network on more interfaces, direct protocol will
> generate multiple routes which will compete for being the best route.
> I will write a patch for this.
Yes, it'll be great.
Or as quick workaround you may add possibility to fetch link-scope 
routes via kernel protocol (or add kernel routing table scanning to 
direct proto).
>
> BTW, the protocol 'loses' not 'looses' routes.
>
Sorry, you're right. English isn't my native language :(