[  517.915470] bond0: (slave eth0): making interface the new active one
[  517.915556] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.144002] bond0: (slave eth0): Releasing backup interface
[  522.267000] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.490086] bond0: (slave eth0): Releasing backup interface
[  526.527100] bond0 (unregistering): Released all slaves