[  517.589454] bond0: (slave eth0): making interface the new active one
[  517.589526] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.741663] bond0: (slave eth0): Releasing backup interface
[  521.799446] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.972811] bond0: (slave eth0): Releasing backup interface
[  526.007597] bond0 (unregistering): Released all slaves