diff --git a/.github/workflows/Continuous-Integration.yml b/.github/workflows/Continuous-Integration.yml
index b324ceb..259d70f 100644
--- a/.github/workflows/Continuous-Integration.yml
+++ b/.github/workflows/Continuous-Integration.yml
@@ -31,14 +31,21 @@ jobs:
       run: |
         cat ${{ steps.Astyle.outputs.astyle-result }}
         exit 1
-  spell-check:
+  codespell:
+    name: Check for spelling errors
     runs-on: ubuntu-latest
-    name: Spell check
     steps:
-    - uses: actions/checkout@main
-    - uses: arduino/actions/libraries/spell-check@master
-      # with:
-      #   ignore-words-list: "./extras/codespell-ignore-words-list.txt"
+    - name: Checkout
+      uses: actions/checkout@main
+
+    # See: https://github.com/codespell-project/actions-codespell/blob/master/README.md
+    - name: Spell check
+      uses: codespell-project/actions-codespell@master
+      with:
+        check_filenames: true
+        check_hidden: true
+        # In the event of a false positive, add the word in all lower case to this file:
+        # ignore_words_file: ./extras/codespell-ignore-words-list.txt
   lib_build:
     runs-on: ubuntu-latest
     name: Library compilation
diff --git a/README.md b/README.md
index 6e2262d..b87f2b2 100644
--- a/README.md
+++ b/README.md
@@ -66,4 +66,4 @@ Call `Ethernet::schedule()` performs an update of the LwIP stack.<br>
 
 ## Wiki
 
-You can find information at https://github.com/stm32duino/wiki/wiki/STM32Ethernet
+You can find information at https://github.com/stm32duino/Arduino_Core_STM32/wiki/STM32Ethernet
diff --git a/keywords.txt b/keywords.txt
index 367603a..09e494c 100644
--- a/keywords.txt
+++ b/keywords.txt
@@ -24,7 +24,9 @@ peek	KEYWORD2
 flush	KEYWORD2
 stop	KEYWORD2
 connected	KEYWORD2
+accept	KEYWORD2
 begin	KEYWORD2
+beginMulticast	KEYWORD2
 beginPacket	KEYWORD2
 endPacket	KEYWORD2
 parsePacket	KEYWORD2
@@ -32,10 +34,17 @@ remoteIP	KEYWORD2
 remotePort	KEYWORD2
 getSocketNumber	KEYWORD2
 localIP	KEYWORD2
-MACAddress	KEYWORD2
+localPort	KEYWORD2
 maintain	KEYWORD2
+linkStatus	KEYWORD2
+MACAddress	KEYWORD2
+subnetMask	KEYWORD2
+gatewayIP	KEYWORD2
+dnsServerIP	KEYWORD2
+setConnectionTimeout	KEYWORD2
 
 #######################################
 # Constants (LITERAL1)
 #######################################
-
+LinkON	LITERAL1
+LinkOFF	LITERAL1
diff --git a/library.json b/library.json
index f4f202c..f8fe867 100755
--- a/library.json
+++ b/library.json
@@ -7,7 +7,7 @@
     "type": "git",
     "url": "https://github.com/stm32duino/STM32Ethernet"
   },
-  "version": "1.3.0",
+  "version": "1.4.0",
   "frameworks": "arduino",
   "platforms": "ststm32",
   "build": {
diff --git a/library.properties b/library.properties
index 3a4aaee..a7e954a 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=STM32duino STM32Ethernet
-version=1.3.0
+version=1.4.0
 author=Various
 maintainer=STMicroelectronics
 sentence=Enables network connection (local and Internet) using the STM32 Board.
diff --git a/src/EthernetClient.cpp b/src/EthernetClient.cpp
index 4fd0a7f..aa2606b 100644
--- a/src/EthernetClient.cpp
+++ b/src/EthernetClient.cpp
@@ -76,7 +76,7 @@ int EthernetClient::connect(IPAddress ip, uint16_t port)
   startTime = millis();
   while (_tcp_client->state == TCP_NONE) {
     stm32_eth_scheduler();
-    if ((_tcp_client->state == TCP_CLOSING) || ((millis() - startTime) >= _timeout)) {
+    if ((_tcp_client->state == TCP_CLOSING) || ((millis() - startTime) >= _connectionTimeout)) {
       stop();
       return 0;
     }
@@ -194,6 +194,7 @@ void EthernetClient::stop()
   if (status() != TCP_CLOSING) {
     tcp_connection_close(_tcp_client->pcb, _tcp_client);
   }
+  mem_free(_tcp_client);
 }
 
 uint8_t EthernetClient::connected()
diff --git a/src/EthernetClient.h b/src/EthernetClient.h
index c937a05..5afb160 100644
--- a/src/EthernetClient.h
+++ b/src/EthernetClient.h
@@ -52,9 +52,9 @@ class EthernetClient : public Client {
     {
       return (_tcp_client->pcb->remote_port);
     };
-    void setTimeout(uint16_t timeout)
+    void setConnectionTimeout(uint16_t timeout)
     {
-      _timeout = timeout;
+      _connectionTimeout = timeout;
     }
 
     friend class EthernetServer;
@@ -63,7 +63,7 @@ class EthernetClient : public Client {
 
   private:
     struct tcp_struct *_tcp_client;
-    uint16_t _timeout = 10000;
+    uint16_t _connectionTimeout = 10000;
 };
 
 #endif
diff --git a/src/EthernetServer.cpp b/src/EthernetServer.cpp
index 386ae9d..2082498 100644
--- a/src/EthernetServer.cpp
+++ b/src/EthernetServer.cpp
@@ -46,6 +46,22 @@ void EthernetServer::begin(uint16_t port)
   begin();
 }
 
+void EthernetServer::end(void)
+{
+  /* Free client */
+  for (int n = 0; n < MAX_CLIENT; n++) {
+    if (_tcp_client[n] != NULL) {
+      EthernetClient client(_tcp_client[n]);
+      client.stop();
+      _tcp_client[n] = NULL;
+    }
+  }
+  if (_tcp_server.pcb != NULL) {
+    tcp_close(_tcp_server.pcb);
+    _tcp_server.pcb = NULL;
+  }
+}
+
 void EthernetServer::accept()
 {
   /* Free client if disconnected */
@@ -93,10 +109,10 @@ size_t EthernetServer::write(const uint8_t *buffer, size_t size)
 
   accept();
 
-  for (int n = 0; n < MAX_CLIENT; n++) {
-    if (_tcp_client[n] != NULL) {
-      if (_tcp_client[n]->pcb != NULL) {
-        EthernetClient client(_tcp_client[n]);
+  for (int i = 0; i < MAX_CLIENT; i++) {
+    if (_tcp_client[i] != NULL) {
+      if (_tcp_client[i]->pcb != NULL) {
+        EthernetClient client(_tcp_client[i]);
         uint8_t s = client.status();
         if (s == TCP_ACCEPTED) {
           n += client.write(buffer, size);
@@ -107,3 +123,9 @@ size_t EthernetServer::write(const uint8_t *buffer, size_t size)
 
   return n;
 }
+
+EthernetServer::operator bool()
+{
+  // server is listening for incoming clients
+  return ((_tcp_server.pcb != NULL) && (_tcp_server.pcb->state == LISTEN));
+}
diff --git a/src/EthernetServer.h b/src/EthernetServer.h
index 3a218d4..10c306c 100644
--- a/src/EthernetServer.h
+++ b/src/EthernetServer.h
@@ -18,8 +18,10 @@ class EthernetServer :
     EthernetClient available();
     virtual void begin();
     virtual void begin(uint16_t port);
+    void end(void);
     virtual size_t write(uint8_t);
     virtual size_t write(const uint8_t *buf, size_t size);
+    virtual operator bool();
     using Print::write;
 };
 
diff --git a/src/lwipopts_default.h b/src/lwipopts_default.h
index d7fae2d..f605098 100644
--- a/src/lwipopts_default.h
+++ b/src/lwipopts_default.h
@@ -51,7 +51,7 @@ a lot of data that needs to be copied, this should be set high. */
 /* MEMP_NUM_UDP_PCB: the number of UDP protocol control blocks. One
    per active UDP "connection". */
 #define MEMP_NUM_UDP_PCB        6
-/* MEMP_NUM_TCP_PCB: the number of simulatenously active TCP
+/* MEMP_NUM_TCP_PCB: the number of simultaneously active TCP
    connections. */
 #define MEMP_NUM_TCP_PCB        10
 /* MEMP_NUM_TCP_PCB_LISTEN: the number of listening TCP
@@ -60,7 +60,7 @@ a lot of data that needs to be copied, this should be set high. */
 /* MEMP_NUM_TCP_SEG: the number of simultaneously queued TCP
    segments. */
 #define MEMP_NUM_TCP_SEG        8
-/* MEMP_NUM_SYS_TIMEOUT: the number of simulateously active
+/* MEMP_NUM_SYS_TIMEOUT: the number of simultaneously active
    timeouts. */
 #define MEMP_NUM_SYS_TIMEOUT    10
 
diff --git a/src/utility/stm32_eth.cpp b/src/utility/stm32_eth.cpp
index 937a297..7b06955 100644
--- a/src/utility/stm32_eth.cpp
+++ b/src/utility/stm32_eth.cpp
@@ -67,6 +67,13 @@
   #warning "Default timer used to call ethernet scheduler at regular interval: TIM14"
 #endif
 
+/* Interrupt priority */
+#ifndef ETH_TIM_IRQ_PRIO
+  #define ETH_TIM_IRQ_PRIO       15 // Warning: it should be lower prio (higher value) than Systick
+#endif
+#ifndef ETH_TIM_IRQ_SUBPRIO
+  #define ETH_TIM_IRQ_SUBPRIO    0
+#endif
 /* Ethernet configuration: user parameters */
 struct stm32_eth_config {
   ip_addr_t ipaddr;
@@ -182,6 +189,7 @@ static void TIM_scheduler_Config(void)
 {
   /* Configure HardwareTimer */
   EthTim = new HardwareTimer(DEFAULT_ETHERNET_TIMER);
+  EthTim->setInterruptPriority(ETH_TIM_IRQ_PRIO, ETH_TIM_IRQ_SUBPRIO);
   EthTim->setMode(1, TIMER_OUTPUT_COMPARE);
 
   /* Timer set to 1ms */