The PD sequence counter inside TRDP is not bound to the source address as it is required by the standard. There should be a database holding last sequence number, comID and source IP address. Incoming PD should be checked against this list and the list should be updated accordingly.
Open: What to do if topoCount changes? -> Clear the list? Keep local values?
seqCounter list is bound to subscription -> if topo counter changes, all subscriptions must be renewed anyway...
Fixed in Rev 1222