[  663.603324] bond0: (slave eth0): making interface the new active one
[  663.603413] bond0: (slave eth0): Enslaving as an active interface with an up link
[  667.789287] bond0: (slave eth0): Releasing backup interface
[  667.861255] bond0: (slave eth0): Enslaving as an active interface with an up link
[  672.018139] bond0: (slave eth0): Releasing backup interface
[  672.041563] bond0 (unregistering): Released all slaves