[  523.402248] bond0: (slave eth0): making interface the new active one
[  523.402356] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.565206] bond0: (slave eth0): Releasing backup interface
[  527.634842] bond0: (slave eth0): Enslaving as an active interface with an up link
[  531.795414] bond0: (slave eth0): Releasing backup interface
[  531.827388] bond0 (unregistering): Released all slaves