Hi Viktor, It's just a guess, but maybe re-enable `protocol direct` and add `interface "*";` so all device routes are known to bird? And also adding `interface "lo0" { stub yes; };` to OSPF? Good luck, Bernd On 20.01.21 06:00, Victor Sudakov wrote:

Dear Colleagues,

My system is full of the following messages:

bird[59366]: KRT: Error sending route 192.168.246.1/32 to kernel: File exists bird[59366]: KRT: Error sending route 2001:470:ecba:2::1/128 to kernel: File exists bird[57195]: KRT: Error sending route 2001:470:ecba:4::1/128 to kernel: File exists vas bird[57195]: KRT: Error sending route 192.168.170.0/24 to kernel: Address already in use

(as you see, these are not only host routes, but network routes as well).

They seem harmless but clog the log. Why is Bird trying to install those routes? Is there an extraneous export or import statement somewhere? Or should I just quelch those warnings and forget?

Here is my config with comments removed (bird2 2.0.7_1, FreeBSD 12.2), and the kernel IPv4 route table below it.

log syslog all;

router id 192.168.246.1;

protocol device { scan time 10; }

protocol direct { disabled; ipv4; ipv6; }

protocol kernel kernel4 { ipv4 { export all; }; }

protocol kernel kernel6 { ipv6 { export all; }; }

protocol static { ipv4; }

protocol ospf v2 ospf4 { ipv4 { import all; export all;}; area 0 { interface "re*" { cost 10; }; interface "bridge*" { cost 10; }; }; } protocol ospf v3 ospf6 { ipv6 { import all; export all;}; area 0 { interface "re*" { cost 10; }; interface "bridge*" { cost 10; }; }; }

$ netstat -rn -finet Routing tables

Internet: Destination Gateway Flags Netif Expire default 192.168.170.1 UG1 re1 127.0.0.1 link#3 UH lo0 192.168.89.0/27 192.168.170.1 UG1 re1 192.168.170.0/24 link#2 U re1 192.168.170.5 link#2 UHS lo0 192.168.246.0/24 link#4 U bridge0 192.168.246.1 link#4 UHS lo0