[  515.469595] bond0: (slave eth0): making interface the new active one
[  515.469684] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.711007] bond0: (slave eth0): Releasing backup interface
[  519.815264] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.989198] bond0: (slave eth0): Releasing backup interface
[  524.019072] bond0 (unregistering): Released all slaves