[  513.828280] bond0: (slave eth0): making interface the new active one
[  513.828365] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.037677] bond0: (slave eth0): Releasing backup interface
[  518.125664] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.324267] bond0: (slave eth0): Releasing backup interface
[  522.353292] bond0 (unregistering): Released all slaves