[  512.956910] bond0: (slave eth0): making interface the new active one
[  512.957001] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.213146] bond0: (slave eth0): Releasing backup interface
[  517.319920] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.493960] bond0: (slave eth0): Releasing backup interface
[  521.522977] bond0 (unregistering): Released all slaves