[  515.737086] bond0: (slave eth0): making interface the new active one
[  515.737203] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.954292] bond0: (slave eth0): Releasing backup interface
[  520.026645] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.181479] bond0: (slave eth0): Releasing backup interface
[  524.205392] bond0 (unregistering): Released all slaves