[  521.413565] bond0: (slave eth0): making interface the new active one
[  521.413645] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.582300] bond0: (slave eth0): Releasing backup interface
[  525.655228] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.809077] bond0: (slave eth0): Releasing backup interface
[  529.834020] bond0 (unregistering): Released all slaves