[  500.784476] bond0: (slave eth0): making interface the new active one
[  500.784611] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.975356] bond0: (slave eth0): Releasing backup interface
[  505.048058] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.203502] bond0: (slave eth0): Releasing backup interface
[  509.232440] bond0 (unregistering): Released all slaves