[  519.266520] bond0: (slave eth0): making interface the new active one
[  519.266613] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.468690] bond0: (slave eth0): Releasing backup interface
[  523.540383] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.694853] bond0: (slave eth0): Releasing backup interface
[  527.727884] bond0 (unregistering): Released all slaves