From 1bb76e2351c7c8b690e8134369df3775a3dfd692 Mon Sep 17 00:00:00 2001
From: Eugene Tiutiunnyk <4804824+eugenet8k@users.noreply.github.com>
Date: Wed, 10 Jan 2024 14:23:40 -0800
Subject: [PATCH] Fix Mac address check in kef integration (#107746)

Fix the check for Mac address in kef integration (#106072)

It might be due to an update of `getmac` dependency in some case the mac
was resolved to "00:00:00:00:00:00" instead of the anticipated `None`.
With that the original bug #47678 where a duplicated entity would be
created in case of HA is restarted while the KEF speaker is offline
came back. The PR #52902 was applied back in time to fix that issue.
Now, this change is a continuation of the previous efforts. The solution
was tested for about two months and it does address the bug with
creating duplicated entities in case of KEF speakers being offline.
---
 homeassistant/components/kef/media_player.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/homeassistant/components/kef/media_player.py b/homeassistant/components/kef/media_player.py
index 96f52ef7e03..b8407fd8bde 100644
--- a/homeassistant/components/kef/media_player.py
+++ b/homeassistant/components/kef/media_player.py
@@ -118,7 +118,7 @@ async def async_setup_platform(
 
     mode = get_ip_mode(host)
     mac = await hass.async_add_executor_job(partial(get_mac_address, **{mode: host}))
-    if mac is None:
+    if mac is None or mac == "00:00:00:00:00:00":
         raise PlatformNotReady("Cannot get the ip address of kef speaker.")
 
     unique_id = f"kef-{mac}"