[  515.356403] bond0: (slave eth0): making interface the new active one
[  515.356503] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.581689] bond0: (slave eth0): Releasing backup interface
[  519.712656] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.929787] bond0: (slave eth0): Releasing backup interface
[  523.957823] bond0 (unregistering): Released all slaves