[  507.398518] bond0: (slave eth0): making interface the new active one
[  507.398633] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.565713] bond0: (slave eth0): Releasing backup interface
[  511.655723] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.859620] bond0: (slave eth0): Releasing backup interface
[  515.878482] bond0 (unregistering): Released all slaves