[  514.900315] bond0: (slave eth0): making interface the new active one
[  514.900403] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.133499] bond0: (slave eth0): Releasing backup interface
[  519.235083] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.418911] bond0: (slave eth0): Releasing backup interface
[  523.453837] bond0 (unregistering): Released all slaves