[  515.261532] bond0: (slave eth0): making interface the new active one
[  515.261631] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.523364] bond0: (slave eth0): Releasing backup interface
[  519.657429] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.862082] bond0: (slave eth0): Releasing backup interface
[  523.893004] bond0 (unregistering): Released all slaves