[  519.113821] bond0: (slave eth0): making interface the new active one
[  519.113913] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.283209] bond0: (slave eth0): Releasing backup interface
[  523.367353] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.514134] bond0: (slave eth0): Releasing backup interface
[  527.547089] bond0 (unregistering): Released all slaves