[  504.052541] bond0: (slave eth0): making interface the new active one
[  504.052612] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.239585] bond0: (slave eth0): Releasing backup interface
[  508.324064] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.462769] bond0: (slave eth0): Releasing backup interface
[  512.502730] bond0 (unregistering): Released all slaves