[  504.159886] bond0: (slave eth0): making interface the new active one
[  504.159985] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.374472] bond0: (slave eth0): Releasing backup interface
[  508.459563] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.605306] bond0: (slave eth0): Releasing backup interface
[  512.635384] bond0 (unregistering): Released all slaves