[  513.364556] bond0: (slave eth0): making interface the new active one
[  513.364650] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.599900] bond0: (slave eth0): Releasing backup interface
[  517.727269] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.953435] bond0: (slave eth0): Releasing backup interface
[  521.983052] bond0 (unregistering): Released all slaves