[  512.518306] bond0: (slave eth0): making interface the new active one
[  512.518375] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.700586] bond0: (slave eth0): Releasing backup interface
[  516.809267] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.992093] bond0: (slave eth0): Releasing backup interface
[  521.020049] bond0 (unregistering): Released all slaves