[  515.552914] bond0: (slave eth0): making interface the new active one
[  515.553010] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.796005] bond0: (slave eth0): Releasing backup interface
[  520.085856] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.328319] bond0: (slave eth0): Releasing backup interface
[  524.360175] bond0 (unregistering): Released all slaves