From e68e549eaf97337f00db6937da380f67856f7f19 Mon Sep 17 00:00:00 2001
From: Nic Limper <nic@xs4all.nl>
Date: Fri, 15 Sep 2023 09:50:56 +0200
Subject: [PATCH] bugfix, prevent duplicate dhcp hostnames

---
 ESP32_AP-Flasher/src/wifimanager.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/ESP32_AP-Flasher/src/wifimanager.cpp b/ESP32_AP-Flasher/src/wifimanager.cpp
index 6a5d7214..0c71ddbd 100644
--- a/ESP32_AP-Flasher/src/wifimanager.cpp
+++ b/ESP32_AP-Flasher/src/wifimanager.cpp
@@ -105,7 +105,13 @@ bool WifiManager::connectToWifi(String ssid, String pass, bool savewhensuccessfu
     _APstarted = false;
     WiFi.disconnect(false, true);
     WiFi.mode(WIFI_MODE_NULL);
-    char hostname[32] = "OpenEpaperLink-AP\0";
+    char hostname[32] = "OpenEpaperLink-";
+    uint8_t mac[6];
+    esp_read_mac(mac, ESP_MAC_WIFI_STA);
+    char lastTwoBytes[5];
+    sprintf(lastTwoBytes, "%02X%02X", mac[4], mac[5]);
+    strcat(hostname, lastTwoBytes);
+
     if (config.alias[0] != '\0') {
         int len = strlen(config.alias);
         int j = 0;
@@ -166,6 +172,7 @@ void WifiManager::startManagementServer() {
     if (!_APstarted) {
         terminalLog("Starting configuration AP, ssid: OpenEPaperLink");
         logLine("Starting configuration AP, ssid OpenEPaperLink");
+        WiFi.disconnect(false, true);
         WiFi.mode(WIFI_AP);
         WiFi.softAP("OpenEPaperLink", "", 1, false);
         WiFi.softAPsetHostname("OpenEPaperLink");