[  511.583061] bond0: (slave eth0): making interface the new active one
[  511.583214] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.790362] bond0: (slave eth0): Releasing backup interface
[  515.868460] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.013201] bond0: (slave eth0): Releasing backup interface
[  520.042174] bond0 (unregistering): Released all slaves