[  515.129616] bond0: (slave eth0): making interface the new active one
[  515.129698] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.314580] bond0: (slave eth0): Releasing backup interface
[  519.382425] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.541373] bond0: (slave eth0): Releasing backup interface
[  523.582125] bond0 (unregistering): Released all slaves