[  515.198109] bond0: (slave eth0): making interface the new active one
[  515.198195] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.388688] bond0: (slave eth0): Releasing backup interface
[  519.505135] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.666911] bond0: (slave eth0): Releasing backup interface
[  523.693996] bond0 (unregistering): Released all slaves