[  519.099820] bond0: (slave eth0): making interface the new active one
[  519.099921] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.272055] bond0: (slave eth0): Releasing backup interface
[  523.338956] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.494894] bond0: (slave eth0): Releasing backup interface
[  527.519841] bond0 (unregistering): Released all slaves