[  515.070194] bond0: (slave eth0): making interface the new active one
[  515.070264] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.259115] bond0: (slave eth0): Releasing backup interface
[  519.365065] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.540949] bond0: (slave eth0): Releasing backup interface
[  523.569847] bond0 (unregistering): Released all slaves