[  515.142904] bond0: (slave eth0): making interface the new active one
[  515.142981] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.323316] bond0: (slave eth0): Releasing backup interface
[  519.439002] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.605209] bond0: (slave eth0): Releasing backup interface
[  523.644154] bond0 (unregistering): Released all slaves