[  519.714457] bond0: (slave eth0): making interface the new active one
[  519.714566] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.916965] bond0: (slave eth0): Releasing backup interface
[  523.991536] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.146367] bond0: (slave eth0): Releasing backup interface
[  528.177388] bond0 (unregistering): Released all slaves