[  519.050006] bond0: (slave eth0): making interface the new active one
[  519.050096] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.222244] bond0: (slave eth0): Releasing backup interface
[  523.305366] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.443388] bond0: (slave eth0): Releasing backup interface
[  527.466535] bond0 (unregistering): Released all slaves