[  511.712862] bond0: (slave eth0): making interface the new active one
[  511.712935] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.923236] bond0: (slave eth0): Releasing backup interface
[  516.020032] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.212032] bond0: (slave eth0): Releasing backup interface
[  520.250899] bond0 (unregistering): Released all slaves