[  504.374287] bond0: (slave eth0): making interface the new active one
[  504.374393] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.557181] bond0: (slave eth0): Releasing backup interface
[  508.640023] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.777655] bond0: (slave eth0): Releasing backup interface
[  512.807562] bond0 (unregistering): Released all slaves