[  513.069246] bond0: (slave eth0): making interface the new active one
[  513.069367] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.270751] bond0: (slave eth0): Releasing backup interface
[  517.355808] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.570568] bond0: (slave eth0): Releasing backup interface
[  521.597073] bond0 (unregistering): Released all slaves