2.15, ospf is broken

[Dmitry Melekhov]

19.03.2024 12:57, Maria Matejka via Bird-users пишет:
>
> Hello,
>
> please tell us more about your setup, config and topology. With this, 
> we can't even start looking for the possible problem.
>

Here is config from one of servers, which is affected.

Really any host with bird2.15 is affected, but we run it only on alma 9.


router id 192.168.110.2;

         route 192.168.204.1/32 via "wg0";
         route X/28 via Z;
         route Y/28 via Z;
         route 192.168.200.34/32  via Z;
         route 192.168.201.66/32  via "gre2";
         route 192.168.200.38/32  via "gre1";

protocol ospf MyOSPF {
         area 0 {
                 networks {
                          192.168.110.0/24;
                          192.168.201.64/30;
                          192.168.200.36/30;
                         };
                 interface "gre1" {
                 #
                         cost 2;
                         type  ptp;
                         password "111" {
                               id 10;
                         algorithm keyed md5;
                         };
                         authentication cryptographic;
                 };
                 interface "gre2" {
                 #
                         cost 1111;
                         type  ptp;
                         password "111" {
                               id 10;
                         algorithm keyed md5;
                         };
                         authentication cryptographic;
#                       bfd yes;
                 };
                 interface "br0" {
                 #LAN
                         cost 1;
                         password "111" {
                               id 10;
                         algorithm keyed md5;
                         };
                         authentication cryptographic;
                         #check link yes;
                 };
         };
}



As you can see it's just to gre uplinks and br0 to LAN.

We also have area 1 in our ospf, but I don't think it is related.

 From log:

Mar 19 08:07:41 ast-zab bird[1164676]: Started
Mar 19 08:07:49 ast-zab bird[1164676]: MyOSPF: Unexpected case in next 
hop calculation
Mar 19 08:07:49 ast-zab bird[1164676]: MyOSPF: Cannot find next hop for 
LSA (Type: 2002, Id: 192.168.22.253, Rt: 192.168.22.253)
Mar 19 08:07:49 ast-zab bird[1164676]: MyOSPF: Unexpected case in next 
hop calculation
Mar 19 08:07:49 ast-zab bird[1164676]: MyOSPF: Cannot find next hop for 
LSA (Type: 2001, Id: 10.1.1.10, Rt: 10.1.1.10)
Mar 19 08:07:49 ast-zab bird[1164676]: MyOSPF: Unexpected case in next 
hop calculation


Please, tell me what other information you need.


Thank you!


> Thanks,
> Maria
>
> On 2024-03-19 05:50, Dmitry Melekhov wrote:
>> Hello!
>>
>> Just upgraded and got:
>>
>> Mar 19 08:07:46 hohr-vpn-1 bird[1523831]: Started
>> Mar 19 08:07:54 hohr-vpn-1 bird[1523831]: MyOSPF: Unexpected case in 
>> next hop calculation
>> Mar 19 08:07:54 hohr-vpn-1 bird[1523831]: MyOSPF: Cannot find next 
>> hop for LSA (Type: 2002, Id: 192.168.222.221, Rt: 192.168.22.178)
>> Mar 19 08:07:54 hohr-vpn-1 bird[1523831]: MyOSPF: Unexpected case in 
>> next hop calculation
>>
>> etc.
>>
>> on all hosts I upgraded.
>>
>> All of them is alma 9.
>>
>>
>> Downgrade to 2.14 solved problem.
>>
>> Is there fix for this or workaround?
>>
>>
>> Thank you!
>>
>>
> -- 
> Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.