[  515.070158] bond0: (slave eth0): making interface the new active one
[  515.070316] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.248246] bond0: (slave eth0): Releasing backup interface
[  519.322638] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.481359] bond0: (slave eth0): Releasing backup interface
[  523.514188] bond0 (unregistering): Released all slaves