[  515.417258] bond0: (slave eth0): making interface the new active one
[  515.417328] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.643546] bond0: (slave eth0): Releasing backup interface
[  519.741765] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.928084] bond0: (slave eth0): Releasing backup interface
[  523.958049] bond0 (unregistering): Released all slaves