[  521.129759] bond0: (slave eth0): making interface the new active one
[  521.129843] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.337824] bond0: (slave eth0): Releasing backup interface
[  525.444931] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.620001] bond0: (slave eth0): Releasing backup interface
[  529.652968] bond0 (unregistering): Released all slaves