[  512.272484] bond0: (slave eth0): making interface the new active one
[  512.272549] bond0: (slave eth0): Enslaving as an active interface with an up link
[  516.503375] bond0: (slave eth0): Releasing backup interface
[  516.617517] bond0: (slave eth0): Enslaving as an active interface with an up link
[  520.791044] bond0: (slave eth0): Releasing backup interface
[  520.810957] bond0 (unregistering): Released all slaves