From 4a8493e1a34863acdb0dbe51e509dd78ad802948 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Thu, 3 Oct 2019 15:10:05 +0200
Subject: [PATCH] dnsdist: Set SO_BINDTODEVICE _before_ binding the health
 check socket

---
 pdns/dnsdist.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdns/dnsdist.cc b/pdns/dnsdist.cc
index fd553dfc7..de8f284a4 100644
--- a/pdns/dnsdist.cc
+++ b/pdns/dnsdist.cc
@@ -1855,7 +1855,6 @@ try
   sock.setNonBlocking();
   if (!IsAnyAddress(ds->sourceAddr)) {
     sock.setReuseAddr();
-    sock.bind(ds->sourceAddr);
     if (!ds->sourceItfName.empty()) {
 #ifdef SO_BINDTODEVICE
       int res = setsockopt(sock.getHandle(), SOL_SOCKET, SO_BINDTODEVICE, ds->sourceItfName.c_str(), ds->sourceItfName.length());
@@ -1864,6 +1863,7 @@ try
       }
 #endif
     }
+    sock.bind(ds->sourceAddr);
   }
   sock.connect(ds->remote);
   ssize_t sent = udpClientSendRequestToBackend(ds, sock.getHandle(), reinterpret_cast<char*>(&packet[0]), packet.size(), true);
-- 
2.40.0