[  515.304497] bond0: (slave eth0): making interface the new active one
[  515.304567] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.511708] bond0: (slave eth0): Releasing backup interface
[  519.626295] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.853726] bond0: (slave eth0): Releasing backup interface
[  523.889714] bond0 (unregistering): Released all slaves