Upon closer inspection, I traced the packets back to my main firewall IPTables.
There was a chain blocking any packet on port 853 that was not destined for the main DNS host, which is also an ADH instance.
After changing the rule, the upstream TLS servers are reachable again.
There was a chain blocking any packet on port 853 that was not destined for the main DNS host, which is also an ADH instance.
After changing the rule, the upstream TLS servers are reachable again.
Statistics: Posted by diasdm — Mon Mar 11, 2024 5:16 am