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I setup a Friendica instance earlier in the week. Turns out the DNS queries had increased somewhat dramatically
(lemmy.fwgx.uk)
I set up friendica as my first foray on to the fediverse. It worked well, but as it turns out doesn't work that well with Lemmy, which was my main usecase. Well whilst trying to fix DNS issues setting up a Lemmy instance instead, I noticed my DNS logs were rather full. My Unbound DNS was getting 40k requests every 10 mins to *.activitypub-troll.cf. I don't know who or what that is, but blocking it didn't reduce the activity. At first I thought it was something to do with Lemmy as I'd forgotten I still had Friendica running. Thankfully stopping the Friendica service reduced the DNS request back to normal.
So if you've set something up recently, you might want to check if there have been any consequences in your service logs
These were queries coming out of the Friendica instance and hitting my DNS and then being forwarded to upstream. I don't think I can control the TTL on that