[  512.030275] bond0: (slave eth0): making interface the new active one
[  512.030355] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.177520] bond0: (slave eth0): Releasing backup interface
[  516.244715] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.397121] bond0: (slave eth0): Releasing backup interface
[  520.419101] bond0 (unregistering): Released all slaves