[  513.104231] bond0: (slave eth0): making interface the new active one
[  513.104319] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.298762] bond0: (slave eth0): Releasing backup interface
[  517.406856] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.583165] bond0: (slave eth0): Releasing backup interface
[  521.613124] bond0 (unregistering): Released all slaves