[  520.190100] bond0: (slave eth0): making interface the new active one
[  520.190193] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.446540] bond0: (slave eth0): Releasing backup interface
[  524.548196] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.727185] bond0: (slave eth0): Releasing backup interface
[  528.756078] bond0 (unregistering): Released all slaves