[  518.468907] bond0: (slave eth0): making interface the new active one
[  518.469000] bond0: (slave eth0): Enslaving as an active interface with an up link
[  522.669948] bond0: (slave eth0): Releasing backup interface
[  522.752160] bond0: (slave eth0): Enslaving as an active interface with an up link
[  526.892572] bond0: (slave eth0): Releasing backup interface
[  526.921480] bond0 (unregistering): Released all slaves