[  504.848819] bond0: (slave eth0): making interface the new active one
[  504.848918] bond0: (slave eth0): Enslaving as an active interface with an up link
[  509.010931] bond0: (slave eth0): Releasing backup interface
[  509.092019] bond0: (slave eth0): Enslaving as an active interface with an up link
[  513.243748] bond0: (slave eth0): Releasing backup interface
[  513.277409] bond0 (unregistering): Released all slaves