[  511.504511] bond0: (slave eth0): making interface the new active one
[  511.504597] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.732833] bond0: (slave eth0): Releasing backup interface
[  515.841490] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.018928] bond0: (slave eth0): Releasing backup interface
[  520.034916] bond0 (unregistering): Released all slaves