[  514.969556] bond0: (slave eth0): making interface the new active one
[  514.969658] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.191729] bond0: (slave eth0): Releasing backup interface
[  519.305379] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.482977] bond0: (slave eth0): Releasing backup interface
[  523.518856] bond0 (unregistering): Released all slaves