[  514.247193] bond0: (slave eth0): making interface the new active one
[  514.247305] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.492023] bond0: (slave eth0): Releasing backup interface
[  518.607829] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.844010] bond0: (slave eth0): Releasing backup interface
[  522.873929] bond0 (unregistering): Released all slaves