[  515.274704] bond0: (slave eth0): making interface the new active one
[  515.274798] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.518823] bond0: (slave eth0): Releasing backup interface
[  519.635595] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.814896] bond0: (slave eth0): Releasing backup interface
[  523.846866] bond0 (unregistering): Released all slaves