[  516.645862] bond0: (slave eth0): making interface the new active one
[  516.645941] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.841664] bond0: (slave eth0): Releasing backup interface
[  520.922604] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.065919] bond0: (slave eth0): Releasing backup interface
[  525.102894] bond0 (unregistering): Released all slaves