[  504.378524] bond0: (slave eth0): making interface the new active one
[  504.378595] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.559922] bond0: (slave eth0): Releasing backup interface
[  508.652702] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.849782] bond0: (slave eth0): Releasing backup interface
[  512.884707] bond0 (unregistering): Released all slaves