LLT-7053: Integrate DNS forwarder#1765
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Integrate RawForwarder into LocalNameServer as an alternative to hickory-based zone forwarding. When `use_raw_forwarder` is enabled, non-.nord queries are forwarded as raw UDP packets to upstream nameservers. The hickory-server forwarder remains the default.
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Problem
Non
.nordDNS queries are forwarded through hickory-server's ForwardAuthority zone. We want to removehickorydependencies as it adds unnecessary overhead, requires additional maintenance and was a source of bugs.Solution
Integrate
RawForwarderintoLocalNameServerbehind a newuse_raw_forwarderfeature flag.use_raw_forwarder: Option<bool>toFeatureDns(default: None, uses hickory-server)use_raw_forwarderis true,LocalNameServerroutes non.nordqueries throughRawForwarderinstead of hickoryResolverandClonableZones::lookup().☑️ Definition of Done checklist