[  519.776001] bond0: (slave eth0): making interface the new active one
[  519.776071] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.917216] bond0: (slave eth0): Releasing backup interface
[  523.985378] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.142969] bond0: (slave eth0): Releasing backup interface
[  528.173951] bond0 (unregistering): Released all slaves