[  515.122035] bond0: (slave eth0): making interface the new active one
[  515.122131] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.323003] bond0: (slave eth0): Releasing backup interface
[  519.431952] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.611456] bond0: (slave eth0): Releasing backup interface
[  523.646071] bond0 (unregistering): Released all slaves