[  519.378289] bond0: (slave eth0): making interface the new active one
[  519.378386] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.528778] bond0: (slave eth0): Releasing backup interface
[  523.598882] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.757330] bond0: (slave eth0): Releasing backup interface
[  527.792066] bond0 (unregistering): Released all slaves