[  455.504521] netdevsim netdevsim1337: Failed to register fib notifier
[  461.909499] netdevsim netdevsim1337: Failed to register fib notifier
[  465.835488] netdevsim netdevsim1337: Failed to register fib notifier
[  471.938506] netdevsim netdevsim1337: Failed to register fib notifier