[  455.676434] netdevsim netdevsim1337: Failed to register fib notifier
[  462.271418] netdevsim netdevsim1337: Failed to register fib notifier
[  466.294416] netdevsim netdevsim1337: Failed to register fib notifier
[  473.110430] netdevsim netdevsim1337: Failed to register fib notifier