OSPF bad packet

[Benoit Chesneau]

Hi,

I have installed latest bird 2.15.1 with ntet link support on Freebsd and I contunuously get the following messages:

```
2024-04-14 23:09:12.386 <RMT> ospfv6: Bad packet from fe80::f89b:80ff:fe06:d7f9 via vlan600 - my own router ID (0)
2024-04-14 23:09:12.386 <RMT> ospfv4: Bad packet from 198.19.4.33 via vlan600 - my own router ID (0)
2024-04-14 23:09:12.386 <RMT> ospfv6: Bad packet from fe80::f89b:80ff:fe06:d7f9 via vlan600 - my own router ID (0)
2024-04-14 23:09:12.386 <RMT> ospfv4: Bad packet from 198.19.4.33 via vlan600 - my own router ID (0)
2024-04-14 23:09:18.155 <TRACE> ospfv4: HELLO packet received from nbr 198.19.0.2 on vlan600
2024-04-14 23:09:22.382 <TRACE> ospfv4: HELLO packet sent via vlan600
2024-04-14 23:09:22.383 <RMT> ospfv6: Bad packet from fe80::f89b:80ff:fe06:d7f9 via vlan600 - my own router ID (0)
2024-04-14 23:09:22.383 <RMT> ospfv4: Bad packet from 198.19.4.33 via vlan600 - my own router ID (0)
2024-04-14 23:09:22.383 <RMT> ospfv6: Bad packet from fe80::f89b:80ff:fe06:d7f9 via vlan600 - my own router ID (0)2024-04-14 23:09:22.383 <RMT> ospfv4: Bad packet from 198.19.4.33 via vlan600 - my own router ID
```

What could be the reason for such error? MTU looks fine, and I can retrieve the route via osf.

Benoît
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