[  520.001414] bond0: (slave eth0): making interface the new active one
[  520.001510] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.250598] bond0: (slave eth0): Releasing backup interface
[  524.357251] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.540009] bond0: (slave eth0): Releasing backup interface
[  528.573053] bond0 (unregistering): Released all slaves