[  515.465848] bond0: (slave eth0): making interface the new active one
[  515.465939] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.624334] bond0: (slave eth0): Releasing backup interface
[  519.695652] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.857163] bond0: (slave eth0): Releasing backup interface
[  523.884068] bond0 (unregistering): Released all slaves