[  504.262985] bond0: (slave eth0): making interface the new active one
[  504.263118] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.432354] bond0: (slave eth0): Releasing backup interface
[  508.504856] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.664598] bond0: (slave eth0): Releasing backup interface
[  512.696511] bond0 (unregistering): Released all slaves