[  515.286838] bond0: (slave eth0): making interface the new active one
[  515.286926] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.508544] bond0: (slave eth0): Releasing backup interface
[  519.620057] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.800158] bond0: (slave eth0): Releasing backup interface
[  523.831068] bond0 (unregistering): Released all slaves