[  515.089863] bond0: (slave eth0): making interface the new active one
[  515.089947] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.319476] bond0: (slave eth0): Releasing backup interface
[  519.426369] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.602970] bond0: (slave eth0): Releasing backup interface
[  523.646036] bond0 (unregistering): Released all slaves