[  514.996560] bond0: (slave eth0): making interface the new active one
[  514.996637] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.203785] bond0: (slave eth0): Releasing backup interface
[  519.318869] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.492252] bond0: (slave eth0): Releasing backup interface
[  523.520155] bond0 (unregistering): Released all slaves