[  521.572481] bond0: (slave eth0): making interface the new active one
[  521.572585] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.767659] bond0: (slave eth0): Releasing backup interface
[  525.824460] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.996198] bond0: (slave eth0): Releasing backup interface
[  530.032137] bond0 (unregistering): Released all slaves