sys/dev/qbus/if_qe.c says, in part, even in -current according to
cvsweb,
/*
* How is the DEQNA turned in ALLMULTI mode???
* Until someone tells me, fall back to PROMISC when more than
* 12 ethernet addresses.
*/
I have a digital copy of EK-DEQNA-UG-001 from bitsavers which appears
to answer this question (though the wording of the first sentence is a
little confusing; I believe there is a "count" missing after the first
"byte"), which I quote here in case anyone wants to pick it up and do
something with it. (I will, but not in any NetBSD version I expect
NetBSD to care about.)