[  539.959922] bond0: (slave eth0): making interface the new active one
[  539.960013] bond0: (slave eth0): Enslaving as an active interface with an up link
[  544.149241] bond0: (slave eth0): Releasing backup interface
[  544.258511] bond0: (slave eth0): Enslaving as an active interface with an up link
[  548.427732] bond0: (slave eth0): Releasing backup interface
[  548.462700] bond0 (unregistering): Released all slaves