[  511.873495] bond0: (slave eth0): making interface the new active one
[  511.873573] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.120032] bond0: (slave eth0): Releasing backup interface
[  516.233691] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.400050] bond0: (slave eth0): Releasing backup interface
[  520.429931] bond0 (unregistering): Released all slaves