[  453.448454] netdevsim netdevsim1337: Failed to register fib notifier
[  458.997444] netdevsim netdevsim1337: Failed to register fib notifier
[  462.409436] netdevsim netdevsim1337: Failed to register fib notifier
[  468.337476] netdevsim netdevsim1337: Failed to register fib notifier