[  504.164763] bond0: (slave eth0): making interface the new active one
[  504.164841] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.375648] bond0: (slave eth0): Releasing backup interface
[  508.459091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.602519] bond0: (slave eth0): Releasing backup interface
[  512.633398] bond0 (unregistering): Released all slaves