[  514.634930] bond0: (slave eth0): making interface the new active one
[  514.635001] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.877658] bond0: (slave eth0): Releasing backup interface
[  518.990429] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.224066] bond0: (slave eth0): Releasing backup interface
[  523.259010] bond0 (unregistering): Released all slaves