[  515.589086] bond0: (slave eth0): making interface the new active one
[  515.589170] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.851658] bond0: (slave eth0): Releasing backup interface
[  519.963226] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.132207] bond0: (slave eth0): Releasing backup interface
[  524.166130] bond0 (unregistering): Released all slaves