[DLR] Under certain conditions the device does not handle sign on frames correctly after power up (certification issue)

The device does not forward the sign on frame on its other port although the ring state was indicated to be "normal" by the preceding beacon frames. This happens on power up only. There is also another condition that needs to be fulfilled to make this issue showing up: The second or even first beacon frame that is received must already show the ring state "normal". If state "normal" is indicated after the 2nd beacon, the sign on frame is transmitted correctly.