Hi, Bird from master branch ignores the default preference set in channel for a kernel protocol, like that: protocol kernel { learn yes; ipv4 { preference 200; import all; export none; }; } Version 2.0.10 seems ok. I suppose the change was introduced with this commit: https://gitlab.nic.cz/labs/bird/-/commit/eb937358c087eaeb6f209660cc7ecfe6d6e... It adds setting of the preference to the krt_learn_async() function. But as I understand when route is learned with netlink hook it is processed like this: nl_parse_route -> krt_got_route_async -> krt_learn_async But when it is learned from scan, it is processed like this: nl_parse_route -> krt_got_route -> krt_learn_scan And setting preference was not added to krt_learn_scan() function. I also saw that in my test - when I added a new route to the kernel while bird was running, it appeared in bird with correct preference. But some time after, the scan updated the route and it was replaced with the default preference.