[  515.593263] bond0: (slave eth0): making interface the new active one
[  515.593350] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.766159] bond0: (slave eth0): Releasing backup interface
[  519.855165] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.053328] bond0: (slave eth0): Releasing backup interface
[  524.088295] bond0 (unregistering): Released all slaves