[  519.506789] bond0: (slave eth0): making interface the new active one
[  519.506872] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.735606] bond0: (slave eth0): Releasing backup interface
[  523.838372] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.020120] bond0: (slave eth0): Releasing backup interface
[  528.055587] bond0 (unregistering): Released all slaves