From dd866dada7a6fdc964b3d44147b343406e06f1f6 Mon Sep 17 00:00:00 2001
From: Juraj Andrassy <juraj.andrassy@gmail.com>
Date: Thu, 4 Apr 2024 19:15:42 +0200
Subject: [PATCH] Ethernet begin with static IP - set DNS with interface name

---
 libraries/Ethernet/src/Ethernet.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libraries/Ethernet/src/Ethernet.cpp b/libraries/Ethernet/src/Ethernet.cpp
index 50c43c9c5..2e0f1a94f 100644
--- a/libraries/Ethernet/src/Ethernet.cpp
+++ b/libraries/Ethernet/src/Ethernet.cpp
@@ -55,7 +55,9 @@ int arduino::EthernetClass::begin(uint8_t *mac, IPAddress ip, IPAddress dns, IPA
 
   eth_if->set_dhcp(false);
   eth_if->set_network(_ip, _netmask, _gateway);
-  eth_if->add_dns_server(_dnsServer1, nullptr);
+  char if_name[5];
+  eth_if->get_interface_name(if_name);
+  eth_if->add_dns_server(_dnsServer1, if_name);
 
   auto ret = _begin(mac, timeout, responseTimeout);
   return ret;