[  512.652267] bond0: (slave eth0): making interface the new active one
[  512.652345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.889431] bond0: (slave eth0): Releasing backup interface
[  516.993810] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.179829] bond0: (slave eth0): Releasing backup interface
[  521.212837] bond0 (unregistering): Released all slaves