[  519.554569] bond0: (slave eth0): making interface the new active one
[  519.554654] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.723875] bond0: (slave eth0): Releasing backup interface
[  523.793702] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.949456] bond0: (slave eth0): Releasing backup interface
[  527.985472] bond0 (unregistering): Released all slaves