[  454.454472] netdevsim netdevsim1337: Failed to register fib notifier
[  460.773488] netdevsim netdevsim1337: Failed to register fib notifier
[  464.845450] netdevsim netdevsim1337: Failed to register fib notifier
[  471.398473] netdevsim netdevsim1337: Failed to register fib notifier