[  504.392728] bond0: (slave eth0): making interface the new active one
[  504.392875] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.564000] bond0: (slave eth0): Releasing backup interface
[  508.651397] bond0: (slave eth0): Enslaving as an active interface with an up link
[  512.785346] bond0: (slave eth0): Releasing backup interface
[  512.813245] bond0 (unregistering): Released all slaves