[  520.432992] bond0: (slave eth0): making interface the new active one
[  520.433084] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.617724] bond0: (slave eth0): Releasing backup interface
[  524.702649] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.845575] bond0: (slave eth0): Releasing backup interface
[  528.871562] bond0 (unregistering): Released all slaves