[  515.046608] bond0: (slave eth0): making interface the new active one
[  515.046674] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.260314] bond0: (slave eth0): Releasing backup interface
[  519.362979] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.538086] bond0: (slave eth0): Releasing backup interface
[  523.578953] bond0 (unregistering): Released all slaves