[  513.050503] bond0: (slave eth0): making interface the new active one
[  513.050600] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.268847] bond0: (slave eth0): Releasing backup interface
[  517.351868] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.493255] bond0: (slave eth0): Releasing backup interface
[  521.533267] bond0 (unregistering): Released all slaves