[  512.363179] bond0: (slave eth0): making interface the new active one
[  512.363265] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.576194] bond0: (slave eth0): Releasing backup interface
[  516.673403] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.869139] bond0: (slave eth0): Releasing backup interface
[  520.906002] bond0 (unregistering): Released all slaves