From 19629ebf813ef7825eb86a46045ebccdfd484d9a Mon Sep 17 00:00:00 2001
From: Sergey Vojtovich <svoj@mariadb.org>
Date: Tue, 7 Mar 2017 15:06:01 +0400
Subject: [PATCH] MDEV-10646 - System Unit File After network-online

Bind to an address even if it is not yet configured.
---
 sql/mysqld.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 90607882aa4..2607307ceee 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -2520,6 +2520,12 @@ static MYSQL_SOCKET activate_tcp_port(uint port)
                                    (char*)&arg, sizeof(arg));
   }
 #endif
+
+#ifdef IP_FREEBIND
+  arg= 1;
+  (void) mysql_socket_setsockopt(ip_sock, IPPROTO_IP, IP_FREEBIND, (char*) &arg,
+                                 sizeof(arg));
+#endif
   /*
     Sometimes the port is not released fast enough when stopping and
     restarting the server. This happens quite often with the test suite