[  511.989027] bond0: (slave eth0): making interface the new active one
[  511.989107] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.187588] bond0: (slave eth0): Releasing backup interface
[  516.293414] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.467997] bond0: (slave eth0): Releasing backup interface
[  520.512967] bond0 (unregistering): Released all slaves