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Skip public DNS for LAN query

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So we don't blindly send requests to public DNS even though they can not
handle these queries.
This commit is contained in:
Cuong Manh Le
2024-12-12 18:36:39 +07:00
committed by Cuong Manh Le
parent 8a96b8bec4
commit 37d41bd215
3 changed files with 57 additions and 1 deletions
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cmd/cli/dns_proxy.go
+3
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@@ -448,6 +448,7 @@ func (p *prog) proxy(ctx context.Context, req *proxyRequest) *proxyResponse {
case isSrvLookup(req.msg):
upstreams = []string{upstreamOS}
upstreamConfigs = []*ctrld.UpstreamConfig{osUpstreamConfig}
ctx = ctrld.LanQueryCtx(ctx)
ctrld.Log(ctx, mainLog.Load().Debug(), "SRV record lookup, using upstreams: %v", upstreams)
case isPrivatePtrLookup(req.msg):
isLanOrPtrQuery = true
@@ -457,6 +458,7 @@ func (p *prog) proxy(ctx context.Context, req *proxyRequest) *proxyResponse {
return res
}
upstreams, upstreamConfigs = p.upstreamsAndUpstreamConfigForPtr(upstreams, upstreamConfigs)
ctx = ctrld.LanQueryCtx(ctx)
ctrld.Log(ctx, mainLog.Load().Debug(), "private PTR lookup, using upstreams: %v", upstreams)
case isLanHostnameQuery(req.msg):
isLanOrPtrQuery = true
@@ -467,6 +469,7 @@ func (p *prog) proxy(ctx context.Context, req *proxyRequest) *proxyResponse {
}
upstreams = []string{upstreamOS}
upstreamConfigs = []*ctrld.UpstreamConfig{osUpstreamConfig}
ctx = ctrld.LanQueryCtx(ctx)
ctrld.Log(ctx, mainLog.Load().Debug(), "lan hostname lookup, using upstreams: %v", upstreams)
default:
ctrld.Log(ctx, mainLog.Load().Debug(), "no explicit policy matched, using default routing -> %v", upstreams)