So PVE sends 0.4 request/sec, x2 = 0.8 request/sec. If that is 40% of your DNS traffic, then we're talking 2 requests/sec in total. Truly an enterprise-grade setup. How will your server withstand the onslaught. What is it, an Altair 8080 or...
That file was added by the IPA tools when you joined your PVE to the IPA domain. I've got the same error on a couple of Debian machines that were upgraded to Trixie. What I did is remove the knownhostsproxy lines while keeping the rest. That's...