IPv6 BGP segfault with bird 1.4.5

[Matthias Schiffer]

On 01/13/2015 02:47 AM, Ondrej Zajicek wrote:
> On Tue, Jan 13, 2015 at 02:02:31AM +0100, Matthias Schiffer wrote:
>> On 01/13/2015 01:45 AM, Ondrej Zajicek wrote:
>>> On Mon, Jan 12, 2015 at 11:02:10PM +0100, Matthias Schiffer wrote:
>>>> Hi,
>>>> recently bird6 has been crashing quite often (several times a week) on
>>>> one of our systems (I don't know why only one of two systems with very
>>>> similar config is affected). Our config contains ~50 BGP peerings, the
>>>> number of exchanged routes is about 100 in total.
>>>
>>>
>>>> Please let me know if you need any more information...
>>>
>>> Hi, could you send me your config file and log fife?
>>>
>>
>> I've attached the configs and what I could get of our logs from before
>> the crash.
> 
> I guess the problem manifests because of two protocols sharing IP address:
> 
> 
> protocol bgp ff_nrw3 from bgp_icvpn {
>     neighbor fec0::a:cf:0:55 as 65530;
> }
> 
> protocol bgp ff_westpfalz1 from bgp_icvpn {
>     neighbor fec0::a:cf:0:55 as 65242;
> }
> 
> 
> You could try attached patch, it should fix the probable source of problems.
> 
> 

Thanks for the quick reply. I've applied the patch and will continue to
run bird with the broken config for a while to see if the crash occurs
again.

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