[  514.222815] bond0: (slave eth0): making interface the new active one
[  514.222887] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.424143] bond0: (slave eth0): Releasing backup interface
[  518.554762] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.778102] bond0: (slave eth0): Releasing backup interface
[  522.804145] bond0 (unregistering): Released all slaves