[  512.806629] bond0: (slave eth0): making interface the new active one
[  512.806719] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.023335] bond0: (slave eth0): Releasing backup interface
[  517.128253] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.299130] bond0: (slave eth0): Releasing backup interface
[  521.322058] bond0 (unregistering): Released all slaves