[  519.136578] bond0: (slave eth0): making interface the new active one
[  519.136700] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.348802] bond0: (slave eth0): Releasing backup interface
[  523.413604] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.574352] bond0: (slave eth0): Releasing backup interface
[  527.601286] bond0 (unregistering): Released all slaves