[  514.883678] bond0: (slave eth0): making interface the new active one
[  514.883783] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.133321] bond0: (slave eth0): Releasing backup interface
[  519.252292] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.420058] bond0: (slave eth0): Releasing backup interface
[  523.445987] bond0 (unregistering): Released all slaves