[  515.832255] bond0: (slave eth0): making interface the new active one
[  515.832334] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.024640] bond0: (slave eth0): Releasing backup interface
[  520.134515] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.314093] bond0: (slave eth0): Releasing backup interface
[  524.350025] bond0 (unregistering): Released all slaves