[  625.651878][ T3390] netdevsim netdevsim1337: Failed to register fib notifier
[  679.272717][ T3847] netdevsim netdevsim1337: Failed to register fib notifier
[  712.171862][ T4122] netdevsim netdevsim1337: Failed to register fib notifier
[  766.673937][ T4576] netdevsim netdevsim1337: Failed to register fib notifier