[  519.587172] bond0: (slave eth0): making interface the new active one
[  519.587263] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.807007] bond0: (slave eth0): Releasing backup interface
[  523.920474] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.093006] bond0: (slave eth0): Releasing backup interface
[  528.119912] bond0 (unregistering): Released all slaves