[  513.400227] bond0: (slave eth0): making interface the new active one
[  513.400314] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.589187] bond0: (slave eth0): Releasing backup interface
[  517.689400] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.876029] bond0: (slave eth0): Releasing backup interface
[  521.909947] bond0 (unregistering): Released all slaves