[  514.693602] bond0: (slave eth0): making interface the new active one
[  514.693676] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.939788] bond0: (slave eth0): Releasing backup interface
[  519.052257] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.224166] bond0: (slave eth0): Releasing backup interface
[  523.257146] bond0 (unregistering): Released all slaves