[  523.363238] bond0: (slave eth0): making interface the new active one
[  523.363316] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.566448] bond0: (slave eth0): Releasing backup interface
[  527.637737] bond0: (slave eth0): Enslaving as an active interface with an up link
[  531.794693] bond0: (slave eth0): Releasing backup interface
[  531.825653] bond0 (unregistering): Released all slaves