diff --git a/cube/User/Inc/wizHelper.h b/cube/User/Inc/wizHelper.h
index 1ab437b..0371ce3 100644
--- a/cube/User/Inc/wizHelper.h
+++ b/cube/User/Inc/wizHelper.h
@@ -1,6 +1,10 @@
 #ifndef _WIZHELPER_H_
 #define _WIZHELPER_H_
 
+#include <stdbool.h>
+
 int wizInit();
+bool isNetworkAvailable();
+
 
 #endif // _WIZHELPER_H_
\ No newline at end of file
diff --git a/cube/User/Src/wizHelper.c b/cube/User/Src/wizHelper.c
index 0267fc0..e6ed663 100644
--- a/cube/User/Src/wizHelper.c
+++ b/cube/User/Src/wizHelper.c
@@ -22,33 +22,38 @@ static uint8_t dhcpBuffer[DHCP_BUFFER_SIZE];
 
 const uint8_t DHCP_SOCK = 0;
 
+static bool networkAvailable = false;
 
-void wiz_cs_select(void) {
+bool isNetworkAvailable() {
+    return networkAvailable;
+}
+
+static void wiz_cs_select(void) {
     HAL_GPIO_WritePin(ETHER_CS_GPIO_Port, ETHER_CS_Pin, GPIO_PIN_RESET);
 }
 
-void wiz_cs_deselect(void) {
+static void wiz_cs_deselect(void) {
     HAL_GPIO_WritePin(ETHER_CS_GPIO_Port, ETHER_CS_Pin, GPIO_PIN_SET);
 }
 
-uint8_t wiz_spi_readbyte(void) {
+static uint8_t wiz_spi_readbyte(void) {
     uint8_t rbuf;
     HAL_SPI_Receive(&etherSpi, &rbuf, 1, HAL_MAX_DELAY);
     // coloredMsg(LOG_YELLOW, "R: %02x", rbuf);
     return rbuf;
 }
 
-void wiz_spi_writebyte(uint8_t wb) {
+static void wiz_spi_writebyte(uint8_t wb) {
     // coloredMsg(LOG_YELLOW, "W: %02x", wb);
     HAL_SPI_Transmit(&etherSpi, &wb, 1, HAL_MAX_DELAY);
 }
 
-void wiz_spi_readburst(uint8_t* pBuf, uint16_t len) {
+static void wiz_spi_readburst(uint8_t* pBuf, uint16_t len) {
     HAL_SPI_Receive(&etherSpi, pBuf, len, HAL_MAX_DELAY);
     // coloredMsg(LOG_YELLOW, "RB: %d %02x %02x %02x", len, pBuf[0], pBuf[1], pBuf[2]);
 }
 
-void wiz_spi_writeburst(uint8_t* pBuf, uint16_t len) {
+static void wiz_spi_writeburst(uint8_t* pBuf, uint16_t len) {
     HAL_SPI_Transmit(&etherSpi, pBuf, len, HAL_MAX_DELAY);
     // coloredMsg(LOG_YELLOW, "WB: %d %02x %02x %02x", len, pBuf[0], pBuf[1], pBuf[2]);
 }
@@ -78,8 +83,6 @@ static void wizDHCPUpdate() {
 }
 
 static void wizDHCPHandler(void *handle) {
-    coloredMsg(LOG_RED, "wizdh");
-
     static uint8_t lastDhcpRes = 255;
 
     uint8_t res = DHCP_run();
@@ -92,6 +95,7 @@ static void wizDHCPHandler(void *handle) {
 
 static void wizPhyLinkHandler(void *handle) {
     static uint8_t lastStablePhyLink = 255;
+    static bool dhcpInitialized = false;
 
     uint8_t phyLink = 0;
     int8_t res = ctlwizchip(CW_GET_PHYLINK, (void*) &phyLink);
@@ -109,13 +113,19 @@ static void wizPhyLinkHandler(void *handle) {
             // run the dhcp handler the first time after 1s and then every 100ms
             schAdd(wizDHCPHandler, NULL, 1000, 1000);
             coloredMsg(LOG_RED, "wizplh, DHCP handler scheduled");
+
+            dhcpInitialized = true;
         } else {
             // stop DHCP handler
-            DHCP_stop();
-            coloredMsg(LOG_RED, "wizplh, DHCP stopped");
+            if (dhcpInitialized) {
+                DHCP_stop();
+                coloredMsg(LOG_RED, "wizplh, DHCP stopped");
 
-            schDel(wizDHCPHandler, NULL);
-            coloredMsg(LOG_RED, "wizplh, DHCP handler unscheduled");
+                schDel(wizDHCPHandler, NULL);
+                coloredMsg(LOG_RED, "wizplh, DHCP handler unscheduled");
+
+                dhcpInitialized = false;
+            }
         }
     }
 }