[  500.938196] bond0: (slave eth0): making interface the new active one
[  500.938282] bond0: (slave eth0): Enslaving as an active interface with an up link
[  505.110467] bond0: (slave eth0): Releasing backup interface
[  505.193965] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.333549] bond0: (slave eth0): Releasing backup interface
[  509.365517] bond0 (unregistering): Released all slaves