[  511.954500] bond0: (slave eth0): making interface the new active one
[  511.954591] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.192187] bond0: (slave eth0): Releasing backup interface
[  516.303816] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.485362] bond0: (slave eth0): Releasing backup interface
[  520.519985] bond0 (unregistering): Released all slaves