[  505.550926] bond0: (slave eth0): making interface the new active one
[  505.551074] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.717110] bond0: (slave eth0): Releasing backup interface
[  509.799166] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.945327] bond0: (slave eth0): Releasing backup interface
[  513.977281] bond0 (unregistering): Released all slaves