So as askbjoernhansen helpfully pointed out, I can't actually just look at the reference timestamp and use that. I was a bit hasty when putting this together, I

So as askbjoernhansen helpfully pointed out, I can't actually just look at the reference timestamp and use that. I was a bit hasty when putting this together, I didn't initially read the spec, I just looked at the NTP response in tcpdump, saw that "reference timestamp" looks about right, and went with that. I now know how to compute the actual offset I'm supposed to use, and I'll implement that instead. That computation doesn't involve the reference timestamp. Still curious why the reference timestamp on this particular timeserver is stuck at that particular time, though. If anyone knows anything about this, do let us know!