[  513.088434] bond0: (slave eth0): making interface the new active one
[  513.088509] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.340900] bond0: (slave eth0): Releasing backup interface
[  517.451421] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.620989] bond0: (slave eth0): Releasing backup interface
[  521.645997] bond0 (unregistering): Released all slaves