[  531.689054] bond0: (slave eth0): making interface the new active one
[  531.689157] bond0: (slave eth0): Enslaving as an active interface with an up link
[  535.890941] bond0: (slave eth0): Releasing backup interface
[  535.953694] bond0: (slave eth0): Enslaving as an active interface with an up link
[  540.112610] bond0: (slave eth0): Releasing backup interface