[  515.361859] bond0: (slave eth0): making interface the new active one
[  515.361951] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.579077] bond0: (slave eth0): Releasing backup interface
[  519.688695] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.859885] bond0: (slave eth0): Releasing backup interface
[  523.896873] bond0 (unregistering): Released all slaves