[  519.043669] bond0: (slave eth0): making interface the new active one
[  519.043759] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.285157] bond0: (slave eth0): Releasing backup interface
[  523.404199] bond0: (slave eth0): Enslaving as an active interface with an up link
[  527.580737] bond0: (slave eth0): Releasing backup interface
[  527.615574] bond0 (unregistering): Released all slaves