[  515.162299] bond0: (slave eth0): making interface the new active one
[  515.162407] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.317604] bond0: (slave eth0): Releasing backup interface
[  519.415455] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.608507] bond0: (slave eth0): Releasing backup interface
[  523.629365] bond0 (unregistering): Released all slaves