[  513.733594] bond0: (slave eth0): making interface the new active one
[  513.733691] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.976802] bond0: (slave eth0): Releasing backup interface
[  518.100622] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.325989] bond0: (slave eth0): Releasing backup interface
[  522.356910] bond0 (unregistering): Released all slaves