[  520.288133] bond0: (slave eth0): making interface the new active one
[  520.288214] bond0: (slave eth0): Enslaving as an active interface with an up link
[  524.430432] bond0: (slave eth0): Releasing backup interface
[  524.506523] bond0: (slave eth0): Enslaving as an active interface with an up link
[  528.656465] bond0: (slave eth0): Releasing backup interface
[  528.684371] bond0 (unregistering): Released all slaves