[  516.139448] bond0: (slave eth0): making interface the new active one
[  516.139529] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.327583] bond0: (slave eth0): Releasing backup interface
[  520.381643] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.560074] bond0: (slave eth0): Releasing backup interface
[  524.590575] bond0 (unregistering): Released all slaves