[  515.479005] bond0: (slave eth0): making interface the new active one
[  515.479093] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.716958] bond0: (slave eth0): Releasing backup interface
[  519.825582] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.997990] bond0: (slave eth0): Releasing backup interface
[  524.024948] bond0 (unregistering): Released all slaves