[  515.604241] bond0: (slave eth0): making interface the new active one
[  515.604318] bond0: (slave eth0): Enslaving as an active interface with an up link
[  519.766047] bond0: (slave eth0): Releasing backup interface
[  519.855151] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.058161] bond0: (slave eth0): Releasing backup interface
[  524.084188] bond0 (unregistering): Released all slaves