From 26438bc922c63029afc9da30a9f677ee2e044fc8 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Tue, 2 Jul 2019 17:07:34 +0200
Subject: [PATCH] dnsdist: De-duplicate DNSCrypt binds in `showDNSCryptBinds()`

---
 pdns/dnsdist-lua.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pdns/dnsdist-lua.cc b/pdns/dnsdist-lua.cc
index ac9f00f46..9165ab1ee 100644
--- a/pdns/dnsdist-lua.cc
+++ b/pdns/dnsdist-lua.cc
@@ -1133,11 +1133,13 @@ void setupLuaConfig(bool client)
       ret << (fmt % "#" % "Address" % "Provider Name") << endl;
       size_t idx = 0;
 
+      std::unordered_set<std::shared_ptr<DNSCryptContext>> contexts;
       for (const auto& frontend : g_frontends) {
         const std::shared_ptr<DNSCryptContext> ctx = frontend->dnscryptCtx;
-        if (!ctx) {
+        if (!ctx || contexts.count(ctx) != 0) {
           continue;
         }
+        contexts.insert(ctx);
         ret<< (fmt % idx % frontend->local.toStringWithPort() % ctx->getProviderName()) << endl;
         idx++;
       }
-- 
2.40.0