[  515.811377] bond0: (slave eth0): making interface the new active one
[  515.811440] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.026104] bond0: (slave eth0): Releasing backup interface
[  520.127226] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.306756] bond0: (slave eth0): Releasing backup interface
[  524.336687] bond0 (unregistering): Released all slaves