[  511.771934] bond0: (slave eth0): making interface the new active one
[  511.772041] bond0: (slave eth0): Enslaving as an active interface with an up link
[  515.986481] bond0: (slave eth0): Releasing backup interface
[  516.066017] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.219274] bond0: (slave eth0): Releasing backup interface
[  520.256173] bond0 (unregistering): Released all slaves