[  513.418418] bond0: (slave eth0): making interface the new active one
[  513.418512] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.660221] bond0: (slave eth0): Releasing backup interface
[  517.780071] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.940126] bond0: (slave eth0): Releasing backup interface
[  521.978052] bond0 (unregistering): Released all slaves