Also, you have to consider the time duration of your last job to be included into the "unemployed gap". Since you'd rather not include your reason for the 6 month gap, you don't want to include your previous employment, as well. Meaning, you'll need to include the time of how long you were employed with this last, plus the 6 months....Does that make sense?

I guess, in other words, I'm assuming that you will be using your employment (before this last) as your LAST employer, (omitting the most recent entirely?). Thus increasing the 6 month gap with that of the duration of last employment, as well.
Example: If you worked at this last job for a year, then the "gap" will be that year + 6 months = 18 months.

While I agree that honesty is the best policy, (and I am no way implying that you "should" lie), but if it were me, I'd say something to the effect that I was assiting an ill family member out of state, somewhere...(whatever would coinside with the duration of the gap).

Shangrala