[  517.048000] bond0: (slave eth0): making interface the new active one
[  517.048091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.314994] bond0: (slave eth0): Releasing backup interface
[  521.436249] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.664109] bond0: (slave eth0): Releasing backup interface
[  525.690160] bond0 (unregistering): Released all slaves