[  516.143458] bond0: (slave eth0): making interface the new active one
[  516.143549] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.338917] bond0: (slave eth0): Releasing backup interface
[  520.442738] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.624131] bond0: (slave eth0): Releasing backup interface
[  524.653049] bond0 (unregistering): Released all slaves