[  513.214493] bond0: (slave eth0): making interface the new active one
[  513.214610] bond0: (slave eth0): Enslaving as an active interface with an up link
[  517.465031] bond0: (slave eth0): Releasing backup interface
[  517.567426] bond0: (slave eth0): Enslaving as an active interface with an up link
[  521.751981] bond0: (slave eth0): Releasing backup interface
[  521.789944] bond0 (unregistering): Released all slaves