[  514.720009] bond0: (slave eth0): making interface the new active one
[  514.720086] bond0: (slave eth0): Enslaving as an active interface with an up link
[  518.937303] bond0: (slave eth0): Releasing backup interface
[  519.038319] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.217000] bond0: (slave eth0): Releasing backup interface
[  523.252945] bond0 (unregistering): Released all slaves