[  519.598039] bond0: (slave eth0): making interface the new active one
[  519.598101] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.793387] bond0: (slave eth0): Releasing backup interface
[  523.874152] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.015947] bond0: (slave eth0): Releasing backup interface
[  528.040840] bond0 (unregistering): Released all slaves