[  515.560747] bond0: (slave eth0): making interface the new active one
[  515.560859] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.768932] bond0: (slave eth0): Releasing backup interface
[  519.850584] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.997570] bond0: (slave eth0): Releasing backup interface
[  524.016516] bond0 (unregistering): Released all slaves