[  519.403847] bond0: (slave eth0): making interface the new active one
[  519.403913] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.611204] bond0: (slave eth0): Releasing backup interface
[  523.732336] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.894906] bond0: (slave eth0): Releasing backup interface
[  527.925925] bond0 (unregistering): Released all slaves