[  504.912090] bond0: (slave eth0): making interface the new active one
[  504.912223] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.076926] bond0: (slave eth0): Releasing backup interface
[  509.157867] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.305482] bond0: (slave eth0): Releasing backup interface
[  513.341588] bond0 (unregistering): Released all slaves