[  518.379949] bond0: (slave eth0): making interface the new active one
[  518.380053] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.590153] bond0: (slave eth0): Releasing backup interface
[  522.706060] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.874152] bond0: (slave eth0): Releasing backup interface
[  526.901091] bond0 (unregistering): Released all slaves