[  517.401555] bond0: (slave eth0): making interface the new active one
[  517.401620] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.626743] bond0: (slave eth0): Releasing backup interface
[  521.730620] bond0: (slave eth0): Enslaving as an active interface with an up link
[  525.912108] bond0: (slave eth0): Releasing backup interface
[  525.944020] bond0 (unregistering): Released all slaves