[  512.241378] bond0: (slave eth0): making interface the new active one
[  512.241447] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.444234] bond0: (slave eth0): Releasing backup interface
[  516.553142] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.720943] bond0: (slave eth0): Releasing backup interface
[  520.749947] bond0 (unregistering): Released all slaves