# Node-red finding MAC address of wrong Homebridge

**URL:** <https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347>\
**Category:** General\
**Created:** [11 October 2025 00:51 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347 "2025-10-11T00:51:23Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![lmolter54](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@lmolter54](https://discourse.nodered.org/u/lmolter54)\
**Post date:** [11 October 2025 00:51 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347/1 "2025-10-11T00:51:23Z")

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I recently moved Homebridge to another server, a Pi 5. Node-red is still on the server (a Pi 4B) where the other Homebridge was. I stopped that HB service, but NR says it can't find HB with the old MAC address. And I changed all HB events to use the new Pin, not the old one.

All HB events are tagged with the new Pin, but NR doesn't see any HB events coming in. It just complains that HB was not found at . ???

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**Author:** ![bakman2](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/bakman2/32/6207_2.png) [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Post date:** [11 October 2025 07:09 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347/2 "2025-10-11T07:09:38Z")

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Which node are you referring to ?

Changing a pin may not be enough (did you restart node-red ?). Homebridge uses mdns to communicate (i believe) and that is reachable via a mac address

Example; this is from the node-red-contrib-homebridge-automation node:

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/f/8f0d5ddfe608593546f9a147546b8ad4e0b2e728.png)

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<div class="post-metadata">

**Author:** ![lmolter54](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@lmolter54](https://discourse.nodered.org/u/lmolter54)\
**Post date:** [11 October 2025 15:48 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347/3 "2025-10-11T15:48:53Z")

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Yeah, I set the new MAC address into all the HB nodes I use. Maybe I missed one?

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**Author:** ![lmolter54](https://avatars.discourse-cdn.com/v4/letter/l/9de0a6/32.png) [@lmolter54](https://discourse.nodered.org/u/lmolter54)\
**Post date:** [11 October 2025 16:00 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347/4 "2025-10-11T16:00:17Z")

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Everything is working now. I had to restart the node red service. Duh. Thanks for your help.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [25 October 2025 16:00 UTC](https://discourse.nodered.org/t/node-red-finding-mac-address-of-wrong-homebridge/99347/5 "2025-10-25T16:00:21Z")

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