[  519.349342] bond0: (slave eth0): making interface the new active one
[  519.349430] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.548009] bond0: (slave eth0): Releasing backup interface
[  523.651790] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.834927] bond0: (slave eth0): Releasing backup interface
[  527.871778] bond0 (unregistering): Released all slaves