[  455.978539] netdevsim netdevsim1337: Failed to register fib notifier
[  462.512546] netdevsim netdevsim1337: Failed to register fib notifier
[  466.384533] netdevsim netdevsim1337: Failed to register fib notifier
[  472.606512] netdevsim netdevsim1337: Failed to register fib notifier