[  514.489924] bond0: (slave eth0): making interface the new active one
[  514.490007] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.773166] bond0: (slave eth0): Releasing backup interface
[  519.003870] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.241290] bond0: (slave eth0): Releasing backup interface
[  523.270457] bond0 (unregistering): Released all slaves