[  516.463939] bond0: (slave eth0): making interface the new active one
[  516.464019] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.663523] bond0: (slave eth0): Releasing backup interface
[  520.783345] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.948001] bond0: (slave eth0): Releasing backup interface
[  524.983963] bond0 (unregistering): Released all slaves