[  519.522502] bond0: (slave eth0): making interface the new active one
[  519.522573] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.753578] bond0: (slave eth0): Releasing backup interface
[  523.852512] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.048215] bond0: (slave eth0): Releasing backup interface
[  528.072015] bond0 (unregistering): Released all slaves