[  520.489257] bond0: (slave eth0): making interface the new active one
[  520.489357] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.700023] bond0: (slave eth0): Releasing backup interface
[  524.807009] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.988992] bond0: (slave eth0): Releasing backup interface
[  529.022007] bond0 (unregistering): Released all slaves