[  454.494668] netdevsim netdevsim1337: Failed to register fib notifier
[  460.739688] netdevsim netdevsim1337: Failed to register fib notifier
[  464.517679] netdevsim netdevsim1337: Failed to register fib notifier
[  470.595703] netdevsim netdevsim1337: Failed to register fib notifier