[  504.433219] bond0: (slave eth0): making interface the new active one
[  504.433296] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.625847] bond0: (slave eth0): Releasing backup interface
[  508.706092] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.848600] bond0: (slave eth0): Releasing backup interface
[  512.876744] bond0 (unregistering): Released all slaves