[  515.474791] bond0: (slave eth0): making interface the new active one
[  515.474880] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.706839] bond0: (slave eth0): Releasing backup interface
[  519.826816] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.994142] bond0: (slave eth0): Releasing backup interface
[  524.014978] bond0 (unregistering): Released all slaves