[  520.413910] bond0: (slave eth0): making interface the new active one
[  520.414070] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.638066] bond0: (slave eth0): Releasing backup interface
[  524.751416] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.989144] bond0: (slave eth0): Releasing backup interface
[  529.026081] bond0 (unregistering): Released all slaves