[  514.522392] bond0: (slave eth0): making interface the new active one
[  514.522459] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.748675] bond0: (slave eth0): Releasing backup interface
[  518.852146] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.040230] bond0: (slave eth0): Releasing backup interface
[  523.076113] bond0 (unregistering): Released all slaves