[  520.074791] bond0: (slave eth0): making interface the new active one
[  520.074861] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.241247] bond0: (slave eth0): Releasing backup interface
[  524.333777] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.535328] bond0: (slave eth0): Releasing backup interface
[  528.570969] bond0 (unregistering): Released all slaves