[  515.503386] bond0: (slave eth0): making interface the new active one
[  515.503473] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.709254] bond0: (slave eth0): Releasing backup interface
[  519.823058] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.994036] bond0: (slave eth0): Releasing backup interface
[  524.023894] bond0 (unregistering): Released all slaves