[  513.351823] bond0: (slave eth0): making interface the new active one
[  513.351889] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.594246] bond0: (slave eth0): Releasing backup interface
[  517.693074] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.877944] bond0: (slave eth0): Releasing backup interface
[  521.914978] bond0 (unregistering): Released all slaves