[  503.364412] bond0: (slave eth0): making interface the new active one
[  503.364500] bond0: (slave eth0): Enslaving as an active interface with an up link
[  507.543101] bond0: (slave eth0): Releasing backup interface
[  507.612083] bond0: (slave eth0): Enslaving as an active interface with an up link
[  511.773016] bond0: (slave eth0): Releasing backup interface
[  511.790408] bond0 (unregistering): Released all slaves