[  515.308531] bond0: (slave eth0): making interface the new active one
[  515.308649] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.659420] bond0: (slave eth0): Releasing backup interface
[  519.822058] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.064139] bond0: (slave eth0): Releasing backup interface
[  524.102162] bond0 (unregistering): Released all slaves