[  512.165014] bond0: (slave eth0): making interface the new active one
[  512.165084] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.377854] bond0: (slave eth0): Releasing backup interface
[  516.498332] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.660172] bond0: (slave eth0): Releasing backup interface
[  520.691131] bond0 (unregistering): Released all slaves