EXACT_ADDR_FILTERS
if (n > EXACT_ADDR_FILTERS)
for (i = 0; i < EXACT_ADDR_FILTERS; i++, reg += 8) {
for (i = 0; i < EXACT_ADDR_FILTERS; i++, reg += 8) {
if (ctx->mac->nucast + cnt < EXACT_ADDR_FILTERS)