[  514.989206] bond0: (slave eth0): making interface the new active one
[  514.989273] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.193765] bond0: (slave eth0): Releasing backup interface
[  519.300853] bond0: (slave eth0): Enslaving as an active interface with an up link
[  523.484051] bond0: (slave eth0): Releasing backup interface
[  523.510965] bond0 (unregistering): Released all slaves