[  515.617387] bond0: (slave eth0): making interface the new active one
[  515.617492] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.828316] bond0: (slave eth0): Releasing backup interface
[  519.902230] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.055389] bond0: (slave eth0): Releasing backup interface
[  524.081441] bond0 (unregistering): Released all slaves