[  512.498300] bond0: (slave eth0): making interface the new active one
[  512.498373] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.694906] bond0: (slave eth0): Releasing backup interface
[  516.799918] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.980118] bond0: (slave eth0): Releasing backup interface
[  521.014956] bond0 (unregistering): Released all slaves