[  515.708591] bond0: (slave eth0): making interface the new active one
[  515.708689] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.979935] bond0: (slave eth0): Releasing backup interface
[  520.105457] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.329756] bond0: (slave eth0): Releasing backup interface
[  524.355669] bond0 (unregistering): Released all slaves