[   30.757639][  T256] ip (256) used greatest stack depth: 23896 bytes left
[   63.023383][  T518] netdevsim netdevsim1337: Failed to register fib notifier
[  120.199098][  T972] netdevsim netdevsim1337: Failed to register fib notifier
[  152.619931][ T1247] netdevsim netdevsim1337: Failed to register fib notifier
[  206.681443][ T1701] netdevsim netdevsim1337: Failed to register fib notifier