[  521.033090] bond0: (slave eth0): making interface the new active one
[  521.033180] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.198628] bond0: (slave eth0): Releasing backup interface
[  525.287789] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.497550] bond0: (slave eth0): Releasing backup interface
[  529.527650] bond0 (unregistering): Released all slaves