[  520.208940] bond0: (slave eth0): making interface the new active one
[  520.209025] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.364754] bond0: (slave eth0): Releasing backup interface
[  524.442517] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.595669] bond0: (slave eth0): Releasing backup interface
[  528.617646] bond0 (unregistering): Released all slaves