[  518.642030] bond0: (slave eth0): making interface the new active one
[  518.642168] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.826388] bond0: (slave eth0): Releasing backup interface
[  522.897370] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.055183] bond0: (slave eth0): Releasing backup interface
[  527.080020] bond0 (unregistering): Released all slaves