From bb70312ccbb42e48b22c9dc100ea26b0db99edf7 Mon Sep 17 00:00:00 2001
From: Barbudor <barbudor@barbudor.net>
Date: Tue, 1 Feb 2022 22:15:27 +0100
Subject: [PATCH] fix ethdnsserver overwritten

---
 tasmota/xdrv_82_esp32_ethernet.ino | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tasmota/xdrv_82_esp32_ethernet.ino b/tasmota/xdrv_82_esp32_ethernet.ino
index 57d740b9a..2240e6e04 100644
--- a/tasmota/xdrv_82_esp32_ethernet.ino
+++ b/tasmota/xdrv_82_esp32_ethernet.ino
@@ -100,8 +100,10 @@ void EthernetEvent(WiFiEvent_t event) {
         ETH.macAddress().c_str(), (uint32_t)ETH.localIP(), eth_hostname);
       Settings->eth_ipv4_address[1] = (uint32_t)ETH.gatewayIP();
       Settings->eth_ipv4_address[2] = (uint32_t)ETH.subnetMask();
-      Settings->eth_ipv4_address[3] = (uint32_t)ETH.dnsIP();
-      Settings->eth_ipv4_address[4] = (uint32_t)ETH.dnsIP(1);
+      if (0 == Settings->eth_ipv4_address[0]) {  // At this point ETH.dnsIP() are NOT correct unless DHCP
+        Settings->eth_ipv4_address[3] = (uint32_t)ETH.dnsIP();
+        Settings->eth_ipv4_address[4] = (uint32_t)ETH.dnsIP(1);
+      }
       TasmotaGlobal.rules_flag.eth_connected = 1;
       TasmotaGlobal.global_state.eth_down = 0;
       break;