[  504.798192] bond0: (slave eth0): making interface the new active one
[  504.798300] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.022609] bond0: (slave eth0): Releasing backup interface
[  509.119793] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.314922] bond0: (slave eth0): Releasing backup interface
[  513.348013] bond0 (unregistering): Released all slaves