[  514.803572] bond0: (slave eth0): making interface the new active one
[  514.803683] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.995877] bond0: (slave eth0): Releasing backup interface
[  519.069462] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.220538] bond0: (slave eth0): Releasing backup interface
[  523.246455] bond0 (unregistering): Released all slaves