[  505.550406] bond0: (slave eth0): making interface the new active one
[  505.550493] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.706935] bond0: (slave eth0): Releasing backup interface
[  509.785155] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.934620] bond0: (slave eth0): Releasing backup interface
[  513.958195] bond0 (unregistering): Released all slaves