[  504.122843] bond0: (slave eth0): making interface the new active one
[  504.122924] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.298632] bond0: (slave eth0): Releasing backup interface
[  508.375257] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.523413] bond0: (slave eth0): Releasing backup interface
[  512.553422] bond0 (unregistering): Released all slaves