[  520.421191] bond0: (slave eth0): making interface the new active one
[  520.421321] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.619659] bond0: (slave eth0): Releasing backup interface
[  524.690407] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.851660] bond0: (slave eth0): Releasing backup interface
[  528.880568] bond0 (unregistering): Released all slaves