From 21b7bf3ccf0ca0b04895b0355a06f2a3ffb833d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juraj=20Andr=C3=A1ssy?= <juraj.andrassy@gmail.com>
Date: Tue, 31 Oct 2023 10:49:02 +0100
Subject: [PATCH] Ethernet - apply MAC address in begin(mac)

tested with "ENC28J60 Mbed EMAC" and "Nano 33 BLE"
---
 libraries/Ethernet/src/Ethernet.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/Ethernet/src/Ethernet.cpp b/libraries/Ethernet/src/Ethernet.cpp
index 26d63e5a2..8d9c51a88 100644
--- a/libraries/Ethernet/src/Ethernet.cpp
+++ b/libraries/Ethernet/src/Ethernet.cpp
@@ -9,6 +9,10 @@ int arduino::EthernetClass::begin(uint8_t *mac, unsigned long timeout, unsigned
     if (eth_if == nullptr) return 0;
   }
 
+  if (mac != nullptr) {
+    eth_if->get_emac().set_hwaddr(mac);
+  }
+
   unsigned long start = millis();
   eth_if->set_blocking(false);
   eth_if->connect();