[  511.817243] bond0: (slave eth0): making interface the new active one
[  511.817321] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.989675] bond0: (slave eth0): Releasing backup interface
[  516.072394] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.214465] bond0: (slave eth0): Releasing backup interface
[  520.241442] bond0 (unregistering): Released all slaves