[  622.695012][ T3389] netdevsim netdevsim1337: Failed to register fib notifier
[  675.681512][ T3845] netdevsim netdevsim1337: Failed to register fib notifier
[  708.458134][ T4121] netdevsim netdevsim1337: Failed to register fib notifier
[  762.156077][ T4576] netdevsim netdevsim1337: Failed to register fib notifier