diff --git a/DMRGateway.cpp b/DMRGateway.cpp
index e9fe5d9..55ef76b 100644
--- a/DMRGateway.cpp
+++ b/DMRGateway.cpp
@@ -1303,32 +1303,32 @@ int CDMRGateway::run()
 	}
 
 	if (m_dmrNetwork1 != NULL) {
-		m_dmrNetwork1->close();
+		m_dmrNetwork1->close(true);
 		delete m_dmrNetwork1;
 	}
 
 	if (m_dmrNetwork2 != NULL) {
-		m_dmrNetwork2->close();
+		m_dmrNetwork2->close(true);
 		delete m_dmrNetwork2;
 	}
 
 	if (m_dmrNetwork3 != NULL) {
-		m_dmrNetwork3->close();
+		m_dmrNetwork3->close(true);
 		delete m_dmrNetwork3;
 	}
 
 	if (m_dmrNetwork4 != NULL) {
-		m_dmrNetwork4->close();
+		m_dmrNetwork4->close(true);
 		delete m_dmrNetwork4;
 	}
 
 	if (m_dmrNetwork5 != NULL) {
-		m_dmrNetwork5->close();
+		m_dmrNetwork5->close(true);
 		delete m_dmrNetwork5;
 	}
 
 	if (m_xlxNetwork != NULL) {
-		m_xlxNetwork->close();
+		m_xlxNetwork->close(true);
 		delete m_xlxNetwork;
 	}
 
@@ -2351,7 +2351,7 @@ bool CDMRGateway::linkXLX(unsigned int number)
 
 	if (m_xlxNetwork != NULL) {
 		LogMessage("XLX, Disconnecting from XLX%03u", m_xlxNumber);
-		m_xlxNetwork->close();
+		m_xlxNetwork->close(true);
 		delete m_xlxNetwork;
 	}
 
@@ -2388,7 +2388,7 @@ bool CDMRGateway::linkXLX(unsigned int number)
 void CDMRGateway::unlinkXLX()
 {
 	if (m_xlxNetwork != NULL) {
-		m_xlxNetwork->close();
+		m_xlxNetwork->close(true);
 		delete m_xlxNetwork;
 		m_xlxNetwork = NULL;
 	}
diff --git a/DMRNetwork.cpp b/DMRNetwork.cpp
index 716a819..d0a6e31 100644
--- a/DMRNetwork.cpp
+++ b/DMRNetwork.cpp
@@ -293,11 +293,11 @@ bool CDMRNetwork::isConnected() const
 	return m_status == RUNNING;
 }
 
-void CDMRNetwork::close()
+void CDMRNetwork::close(bool sayGoodbye)
 {
 	LogMessage("%s, Closing DMR Network", m_name.c_str());
 
-	if (m_status == RUNNING) {
+	if (sayGoodbye && (m_status == RUNNING)) {
 		unsigned char buffer[9U];
 		::memcpy(buffer + 0U, "RPTCL", 5U);
 		::memcpy(buffer + 5U, m_id, 4U);
@@ -349,7 +349,7 @@ void CDMRNetwork::clock(unsigned int ms)
 	int length = m_socket.read(m_buffer, BUFFER_LENGTH, address, addrlen);
 	if (length < 0) {
 		LogError("%s, Socket has failed, retrying connection to the master", m_name.c_str());
-		close();
+		close(false);
 		open();
 		return;
 	}
@@ -383,7 +383,7 @@ void CDMRNetwork::clock(unsigned int ms)
 				   the Network sometimes times out and reaches here.
 				   We want it to reconnect so... */
 				LogError("%s, Login to the master has failed, retrying network ...", m_name.c_str());
-				close();
+				close(false);
 				open();
 				return;
 			}
@@ -428,7 +428,7 @@ void CDMRNetwork::clock(unsigned int ms)
 			}
 		} else if (::memcmp(m_buffer, "MSTCL", 5U) == 0) {
 			LogError("%s, Master is closing down", m_name.c_str());
-			close();
+			close(false);
 			open();
 		} else if (::memcmp(m_buffer, "MSTPONG", 7U) == 0) {
 			m_timeoutTimer.start();
@@ -444,7 +444,7 @@ void CDMRNetwork::clock(unsigned int ms)
 	m_timeoutTimer.clock(ms);
 	if (m_timeoutTimer.isRunning() && m_timeoutTimer.hasExpired()) {
 		LogError("%s, Connection to the master has timed out, retrying connection", m_name.c_str());
-		close();
+		close(false);
 		open();
 	}
 }
@@ -535,7 +535,7 @@ bool CDMRNetwork::write(const unsigned char* data, unsigned int length)
 	bool ret = m_socket.write(data, length, m_addr, m_addrLen);
 	if (!ret) {
 		LogError("%s, Socket has failed when writing data to the master, retrying connection", m_name.c_str());
-		m_socket.close();
+		close(false);
 		open();
 		return false;
 	}
diff --git a/DMRNetwork.h b/DMRNetwork.h
index e459c6b..7ad5e0d 100644
--- a/DMRNetwork.h
+++ b/DMRNetwork.h
@@ -1,5 +1,5 @@
 /*
- *   Copyright (C) 2015,2016,2017,2018,2020,2021 by Jonathan Naylor G4KLX
+ *   Copyright (C) 2015,2016,2017,2018,2020.2021 by Jonathan Naylor G4KLX
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
@@ -57,7 +57,7 @@ public:
 
 	bool isConnected() const;
 
-	void close();
+	void close(bool sayGoodbye);
 
 private:
 	std::string      m_address;
diff --git a/UDPSocket.cpp b/UDPSocket.cpp
index 510c8a2..ab025ec 100644
--- a/UDPSocket.cpp
+++ b/UDPSocket.cpp
@@ -187,6 +187,8 @@ bool CUDPSocket::open(const unsigned int index, const unsigned int af, const std
 		return false;
 	}
 
+	close(index);
+
 	int fd = ::socket(addr.ss_family, SOCK_DGRAM, 0);
 	if (fd < 0) {
 #if defined(_WIN32) || defined(_WIN64)
@@ -343,13 +345,13 @@ bool CUDPSocket::write(const unsigned char* buffer, unsigned int length, const s
 
 void CUDPSocket::close()
 {
-	for (int i = 0; i < UDP_SOCKET_MAX; i++)
-		close(m_fd[i]);
+	for (unsigned int i = 0; i < UDP_SOCKET_MAX; i++)
+		close(i);
 }
 
 void CUDPSocket::close(const unsigned int index)
 {
- 	if (m_fd[index] >= 0) {
+ 	if ((index < UDP_SOCKET_MAX) && (m_fd[index] >= 0)) {
 #if defined(_WIN32) || defined(_WIN64)
 		::closesocket(m_fd[index]);
 #else
diff --git a/Version.h b/Version.h
index 4ad1def..1a43e3a 100644
--- a/Version.h
+++ b/Version.h
@@ -19,6 +19,6 @@
 #if !defined(VERSION_H)
 #define	VERSION_H
 
-const char* VERSION = "20210313";
+const char* VERSION = "20210409";
 
 #endif