[  513.089258] bond0: (slave eth0): making interface the new active one
[  513.089355] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.342383] bond0: (slave eth0): Releasing backup interface
[  517.464935] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.691045] bond0: (slave eth0): Releasing backup interface
[  521.725000] bond0 (unregistering): Released all slaves