[  500.393004] bond0: (slave eth0): making interface the new active one
[  500.393091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.593324] bond0: (slave eth0): Releasing backup interface
[  504.660163] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.822342] bond0: (slave eth0): Releasing backup interface
[  508.856254] bond0 (unregistering): Released all slaves