[  515.295940] bond0: (slave eth0): making interface the new active one
[  515.296025] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.438682] bond0: (slave eth0): Releasing backup interface
[  519.512384] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.664626] bond0: (slave eth0): Releasing backup interface
[  523.696610] bond0 (unregistering): Released all slaves