[  515.329778] bond0: (slave eth0): making interface the new active one
[  515.329841] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.580077] bond0: (slave eth0): Releasing backup interface
[  519.693326] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.865902] bond0: (slave eth0): Releasing backup interface
[  523.908283] bond0 (unregistering): Released all slaves