Earlier in the day, maybe 2pm, I had some corned beef from the deli. It could have been that but I doubt it.
Overall for the day, depending on whether there were a few carbs in the corned beef (which I doubt), I stayed between 20 and 25 carbs for the day.
The corned beef may have more carbs than you think. I've bought corned beef in a bag that you cook at home, and some has injected sugar solution and some doesn't. Almost any processed meat will have some carbs in it, though it may round down to 0g/serving.
I'd agree that the bloated feeling more likely came from the peanuts, though. I get the same thing, but it usually doesn't hit me unless I have them a few days in a row.
Yesterday I found what might be one of those "intolerances" of which you speak. Around 6pm I had two small bags of peanuts, 5 carbs ea. By 10:30 I felt bloated and had to let my belt out a notch. This morning my physical weight was up 2.5 pounds from yesterday. (Water. I know)
I like to do a "3 strikes and you're out" plan to confirm an intolerance. Now that you think peanuts are a suspect, avoid them for a month or two then try them again under different circumstances. Then another month or two later a third attempt. By then you can be quite certain.
Be aggressive/conservative about what you suspect; be cautious/experimental about what you know. Start with a guess but figure at least some of your guesses are going to be wrong.
It's a principle that goes all through the Atkins process. Start out very low then move up until you fall out of ketosis to find your CCLL - Start conservative and experiment to find your custom ideal intake. Start out with a very restricted list of allowed foods then add one back in using the carb ladder and watch for ill effect - Start conservative and experiment to find your food intolerances. Both halves of the system assume that pre-conceived notions aren't the way to find your ideal foods and that experiment is the way.