master stuck in pre-master state
When two masters are connected to the same link one of them tries to enter a state pre-master. However this state is not compiled in the ppsi, so one device stuck there forever. It is necessary to restart a device or re-establish a link.
BUG introduced by a PPSI's commit:
2996dd7b compliance, 18.104.22.168: properly switch to MASTER or PRE_MASTER
Already reported nad fixed for WRPC