[  504.482967] bond0: (slave eth0): making interface the new active one
[  504.483046] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.694642] bond0: (slave eth0): Releasing backup interface
[  508.774656] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.917831] bond0: (slave eth0): Releasing backup interface
[  512.951820] bond0 (unregistering): Released all slaves