[  520.706010] bond0: (slave eth0): making interface the new active one
[  520.706150] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.878671] bond0: (slave eth0): Releasing backup interface
[  524.960925] bond0: (slave eth0): Enslaving as an active interface with an up link
[  529.098353] bond0: (slave eth0): Releasing backup interface
[  529.124326] bond0 (unregistering): Released all slaves