[  517.238866] bond0: (slave eth0): making interface the new active one
[  517.238961] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.421696] bond0: (slave eth0): Releasing backup interface
[  521.500424] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.651269] bond0: (slave eth0): Releasing backup interface
[  525.687097] bond0 (unregistering): Released all slaves