[  500.520103] bond0: (slave eth0): making interface the new active one
[  500.520184] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.714125] bond0: (slave eth0): Releasing backup interface
[  504.791691] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.936300] bond0: (slave eth0): Releasing backup interface
[  508.976377] bond0 (unregistering): Released all slaves