[  514.633282] bond0: (slave eth0): making interface the new active one
[  514.633364] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.884784] bond0: (slave eth0): Releasing backup interface
[  518.991853] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.165015] bond0: (slave eth0): Releasing backup interface
[  523.208960] bond0 (unregistering): Released all slaves