[  541.220833] bond0: (slave eth0): making interface the new active one
[  541.220918] bond0: (slave eth0): Enslaving as an active interface with an up link
[  545.427922] bond0: (slave eth0): Releasing backup interface
[  545.512164] bond0: (slave eth0): Enslaving as an active interface with an up link
[  549.715687] bond0: (slave eth0): Releasing backup interface