[  518.153531] bond0: (slave eth0): making interface the new active one
[  518.153596] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.314190] bond0: (slave eth0): Releasing backup interface
[  522.371855] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.541051] bond0: (slave eth0): Releasing backup interface
[  526.576038] bond0 (unregistering): Released all slaves