diff --git a/src/include/platform/ConfigurationManager.h b/src/include/platform/ConfigurationManager.h
index e846e420f5dc79..92c28570cf25e8 100644
--- a/src/include/platform/ConfigurationManager.h
+++ b/src/include/platform/ConfigurationManager.h
@@ -89,6 +89,7 @@ class ConfigurationManager
     };
 
     virtual CHIP_ERROR GetPrimaryMACAddress(MutableByteSpan buf)                           = 0;
+    virtual CHIP_ERROR GetPrimaryEthernetMACAddress(MutableByteSpan buf)                   = 0;
     virtual CHIP_ERROR GetPrimaryWiFiMACAddress(uint8_t * buf)                             = 0;
     virtual CHIP_ERROR GetPrimary802154MACAddress(uint8_t * buf)                           = 0;
     virtual CHIP_ERROR GetSoftwareVersionString(char * buf, size_t bufSize)                = 0;
diff --git a/src/include/platform/internal/GenericConfigurationManagerImpl.h b/src/include/platform/internal/GenericConfigurationManagerImpl.h
index 21310be54641d9..27b06beda47d90 100644
--- a/src/include/platform/internal/GenericConfigurationManagerImpl.h
+++ b/src/include/platform/internal/GenericConfigurationManagerImpl.h
@@ -70,6 +70,7 @@ class GenericConfigurationManagerImpl : public ConfigurationManager
     CHIP_ERROR SetFirmwareBuildChipEpochTime(System::Clock::Seconds32 buildTime) override;
     CHIP_ERROR StoreSerialNumber(const char * serialNum, size_t serialNumLen) override;
     CHIP_ERROR GetPrimaryMACAddress(MutableByteSpan buf) override;
+    CHIP_ERROR GetPrimaryEthernetMACAddress(MutableByteSpan buf) override;
     CHIP_ERROR GetPrimaryWiFiMACAddress(uint8_t * buf) override;
     CHIP_ERROR GetPrimary802154MACAddress(uint8_t * buf) override;
     CHIP_ERROR StoreManufacturingDate(const char * mfgDate, size_t mfgDateLen) override;
diff --git a/src/include/platform/internal/GenericConfigurationManagerImpl.ipp b/src/include/platform/internal/GenericConfigurationManagerImpl.ipp
index 4f77ae9f975162..4bd35861dca731 100644
--- a/src/include/platform/internal/GenericConfigurationManagerImpl.ipp
+++ b/src/include/platform/internal/GenericConfigurationManagerImpl.ipp
@@ -366,6 +366,12 @@ CHIP_ERROR GenericConfigurationManagerImpl<ConfigClass>::GetPrimaryWiFiMACAddres
     return CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
 }
 
+template <class ConfigClass>
+CHIP_ERROR GenericConfigurationManagerImpl<ConfigClass>::GetPrimaryEthernetMACAddress(MutableByteSpan buf)
+{
+    return CHIP_DEVICE_ERROR_CONFIG_NOT_FOUND;
+}
+
 template <class ConfigClass>
 CHIP_ERROR GenericConfigurationManagerImpl<ConfigClass>::GetPrimaryMACAddress(MutableByteSpan buf)
 {
@@ -374,6 +380,14 @@ CHIP_ERROR GenericConfigurationManagerImpl<ConfigClass>::GetPrimaryMACAddress(Mu
 
     memset(buf.data(), 0, buf.size());
 
+#if CHIP_DEVICE_CONFIG_ENABLE_ETHERNET
+    if (chip::DeviceLayer::ConfigurationMgr().GetPrimaryEthernetMACAddress(buf) == CHIP_NO_ERROR)
+    {
+        ChipLogDetail(DeviceLayer, "Using Ethernet extended MAC for hostname.");
+        return CHIP_NO_ERROR;
+    }
+#endif
+
 #if CHIP_DEVICE_CONFIG_ENABLE_THREAD
     if (chip::DeviceLayer::ThreadStackMgr().GetPrimary802154MACAddress(buf.data()) == CHIP_NO_ERROR)
     {
diff --git a/src/platform/ESP32/ConfigurationManagerImpl.cpp b/src/platform/ESP32/ConfigurationManagerImpl.cpp
index 188fb75a43e86b..822fb7902688fc 100644
--- a/src/platform/ESP32/ConfigurationManagerImpl.cpp
+++ b/src/platform/ESP32/ConfigurationManagerImpl.cpp
@@ -31,6 +31,9 @@
 #include <platform/ESP32/ESP32Config.h>
 #include <platform/internal/GenericConfigurationManagerImpl.ipp>
 
+#if CHIP_DEVICE_CONFIG_ENABLE_ETHERNET
+#include "esp_mac.h"
+#endif
 #include "esp_ota_ops.h"
 #include "esp_phy_init.h"
 #include "esp_wifi.h"
@@ -262,6 +265,20 @@ CHIP_ERROR ConfigurationManagerImpl::StoreCountryCode(const char * code, size_t
     return GenericConfigurationManagerImpl<ESP32Config>::StoreCountryCode(code, codeLen);
 }
 
+CHIP_ERROR ConfigurationManagerImpl::GetPrimaryEthernetMACAddress(MutableByteSpan buf)
+{
+#if CHIP_DEVICE_CONFIG_ENABLE_ETHERNET
+    if (buf.size() < ConfigurationManager::kPrimaryMACAddressLength)
+        return CHIP_ERROR_BUFFER_TOO_SMALL;
+
+    esp_err_t err = esp_read_mac(buf.data(), ESP_MAC_ETH);
+    buf.reduce_size(ConfigurationManager::kPrimaryMACAddressLength);
+    return MapConfigError(err);
+#else
+    return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
+#endif
+}
+
 CHIP_ERROR ConfigurationManagerImpl::GetPrimaryWiFiMACAddress(uint8_t * buf)
 {
 #if CHIP_DEVICE_CONFIG_ENABLE_WIFI
diff --git a/src/platform/ESP32/ConfigurationManagerImpl.h b/src/platform/ESP32/ConfigurationManagerImpl.h
index fce74d9307b823..e0ebb0c430a720 100644
--- a/src/platform/ESP32/ConfigurationManagerImpl.h
+++ b/src/platform/ESP32/ConfigurationManagerImpl.h
@@ -66,6 +66,7 @@ class ConfigurationManagerImpl : public Internal::GenericConfigurationManagerImp
     // ===== Members that implement the ConfigurationManager public interface.
 
     CHIP_ERROR Init(void) override;
+    CHIP_ERROR GetPrimaryEthernetMACAddress(MutableByteSpan buf) override;
     CHIP_ERROR GetPrimaryWiFiMACAddress(uint8_t * buf) override;
     bool CanFactoryReset(void) override;
     void InitiateFactoryReset(void) override;
diff --git a/src/platform/fake/ConfigurationManagerImpl.h b/src/platform/fake/ConfigurationManagerImpl.h
index 9347d22052c247..d3b7acd4d4c58b 100644
--- a/src/platform/fake/ConfigurationManagerImpl.h
+++ b/src/platform/fake/ConfigurationManagerImpl.h
@@ -51,6 +51,7 @@ class ConfigurationManagerImpl : public ConfigurationManager
     CHIP_ERROR StoreSoftwareVersion(uint32_t softwareVer) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR StoreSerialNumber(const char * serialNum, size_t serialNumLen) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR GetPrimaryMACAddress(MutableByteSpan buf) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
+    CHIP_ERROR GetPrimaryEthernetMACAddress(MutableByteSpan buf) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR GetPrimaryWiFiMACAddress(uint8_t * buf) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR GetPrimary802154MACAddress(uint8_t * buf) override { return CHIP_ERROR_NOT_IMPLEMENTED; }
     CHIP_ERROR StoreManufacturingDate(const char * mfgDate, size_t mfgDateLen) override { return CHIP_ERROR_NOT_IMPLEMENTED; }