[  520.185002] bond0: (slave eth0): making interface the new active one
[  520.185090] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.370125] bond0: (slave eth0): Releasing backup interface
[  524.447761] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.597831] bond0: (slave eth0): Releasing backup interface
[  528.619635] bond0 (unregistering): Released all slaves