I just read a sentence that ended with “... why a host might use two rather than one address.” and it seemed awkward to me. What rule governs a word's plurality, when it is used in this sort of shorthand to refer to both single and multiple things?
I would probably say:
this or that address
these or those addresses
one or two addresses
two or one addresses
That last one is awkward and I wouldn't normally use it, but the “rather than” construction forces that order.
So do you pluralize if the last item is multiple? If there are any multiple items in the list?