[  520.076418] bond0: (slave eth0): making interface the new active one
[  520.076546] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.241908] bond0: (slave eth0): Releasing backup interface
[  524.312273] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.470342] bond0: (slave eth0): Releasing backup interface
[  528.503253] bond0 (unregistering): Released all slaves