[HECnet] LQA system ID message

I was watching the MOP Console system ID messages from DECnet/E on simh, with an emulated LQA. Noticed something odd: the source address was broadcast. That's not valid, of course. The question is why that happened. The answer is that the emulation uses the address in slot 0 of the address filter as the source address. The hardware doesn't care what order the addresses go in as far as filtering is concerned; DECnet/E puts broadcast in slot 0 and the physical address in slot 1, followed by any multicast addresses. Is the SIMH behavior also what a real LQA does? That would be an interesting DECnet/E bug if so... Or does a real LQA just use the physical address, as a UNA would? paul