[  514.722555] bond0: (slave eth0): making interface the new active one
[  514.722616] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.934075] bond0: (slave eth0): Releasing backup interface
[  519.028277] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.222051] bond0: (slave eth0): Releasing backup interface
[  523.262955] bond0 (unregistering): Released all slaves