[  515.573140] bond0: (slave eth0): making interface the new active one
[  515.573226] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.765912] bond0: (slave eth0): Releasing backup interface
[  519.870234] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.062933] bond0: (slave eth0): Releasing backup interface
[  524.077860] bond0 (unregistering): Released all slaves