[  503.960709] bond0: (slave eth0): making interface the new active one
[  503.960787] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.175970] bond0: (slave eth0): Releasing backup interface
[  508.263523] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.463588] bond0: (slave eth0): Releasing backup interface
[  512.491504] bond0 (unregistering): Released all slaves