[  515.027210] bond0: (slave eth0): making interface the new active one
[  515.027300] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.250507] bond0: (slave eth0): Releasing backup interface
[  519.355885] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.544108] bond0: (slave eth0): Releasing backup interface
[  523.579918] bond0 (unregistering): Released all slaves