[  512.743250] bond0: (slave eth0): making interface the new active one
[  512.743317] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.946550] bond0: (slave eth0): Releasing backup interface
[  517.048168] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.236010] bond0: (slave eth0): Releasing backup interface
[  521.260286] bond0 (unregistering): Released all slaves