[  515.070603] bond0: (slave eth0): making interface the new active one
[  515.070684] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.250433] bond0: (slave eth0): Releasing backup interface
[  519.321666] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.479390] bond0: (slave eth0): Releasing backup interface
[  523.501420] bond0 (unregistering): Released all slaves