DNS: negative cache behind a local resolver

♠ Problem statement : a newly created Route 53 record resolved through public DNS, but Chrome Brave and macOS still returned DNS_PROBE_POSSIBLE . It smells like a DNS caching issue. Flushing mDNSResponder did nothing though. The system resolver was Tailscale &rsquo;s local DNS proxy, so I asked that resolver rather than trusting dig &rsquo;s default path: % dig +time=3 +tries=1 @100.100.100.100…