[  515.406983] bond0: (slave eth0): making interface the new active one
[  515.407073] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.640142] bond0: (slave eth0): Releasing backup interface
[  519.734529] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.927006] bond0: (slave eth0): Releasing backup interface
[  523.959060] bond0 (unregistering): Released all slaves