[  515.124983] bond0: (slave eth0): making interface the new active one
[  515.125091] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.385530] bond0: (slave eth0): Releasing backup interface
[  519.510829] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.741573] bond0: (slave eth0): Releasing backup interface
[  523.775909] bond0 (unregistering): Released all slaves