[  504.247579] bond0: (slave eth0): making interface the new active one
[  504.247681] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.437172] bond0: (slave eth0): Releasing backup interface
[  508.509751] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.662483] bond0: (slave eth0): Releasing backup interface
[  512.694344] bond0 (unregistering): Released all slaves