[  454.970574] netdevsim netdevsim1337: Failed to register fib notifier
[  461.250562] netdevsim netdevsim1337: Failed to register fib notifier
[  465.090578] netdevsim netdevsim1337: Failed to register fib notifier
[  471.237578] netdevsim netdevsim1337: Failed to register fib notifier