Re: KRT: Error sending route xxxx/46 to kernel: File exists

On 21.03.20 22:11, Christoph wrote:

Hi,

we get this error about 7 times an hour on a BGP router running BIRD 2.0.7 on FreeBSD:

<ERR> KRT: Error sending route xxxx/46 to kernel: File exists

Is this something we should look into?

thanks!

Hi Christoph, This indicates that the route is already resent in the FIB of the OS. Check if you have `learn` enable in `protocol kernel` or not. Maybe the routes comes from `post-up` or similar, or i.e. keepalived or any other routing daemon, but bird is not aware of it via its own routing table. So check where this route comes from, and evaluate if it is intended this way. Best, Bernd