[  515.392395] bond0: (slave eth0): making interface the new active one
[  515.392457] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.576259] bond0: (slave eth0): Releasing backup interface
[  519.694913] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.858969] bond0: (slave eth0): Releasing backup interface
[  523.890859] bond0 (unregistering): Released all slaves