From 20f67fee9447069d4586a41254468ac060b2d65e Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Mon, 15 May 2023 15:32:27 +0200
Subject: [PATCH] dnsdist: Really disable REUSEADDR on outgoing UDP client
 sockets

It turns out that our `Socket::bind()` will _helpfully_ enable this
by default.
---
 pdns/dnsdistdist/dnsdist-healthchecks.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/dnsdistdist/dnsdist-healthchecks.cc b/pdns/dnsdistdist/dnsdist-healthchecks.cc
index 9ec50e3a5a..213374020f 100644
--- a/pdns/dnsdistdist/dnsdist-healthchecks.cc
+++ b/pdns/dnsdistdist/dnsdist-healthchecks.cc
@@ -327,7 +327,7 @@ bool queueHealthCheck(std::unique_ptr<FDMultiplexer>& mplexer, const std::shared
         SSetsockopt(sock.getHandle(), SOL_IP, IP_BIND_ADDRESS_NO_PORT, 1);
       }
 #endif
-      sock.bind(ds->d_config.sourceAddr);
+      sock.bind(ds->d_config.sourceAddr, false);
     }
 
     auto data = std::make_shared<HealthCheckData>(*mplexer, ds, std::move(checkName), checkType, checkClass, queryID);
-- 
2.47.2