[Help needed]: bind EADDRINUSE <someIP>:5353 on macOS about node-red-contrib-homekit-bridged HOT 7 OPEN

First of all, are you using any different apps for HomeKit on the same server?

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Hi @Shaquu and thanks for the answer.
No, I'm not using any other apps for HomeKit.
The server is running standard macOS Big Sur + Node-RED + NRCHKB. It's also running Mosquito, a webserver, a database, etc., but nothing related to HomeKit directly as far as I know.

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It will be tough since I do not know many people using vlan.

You could try to look for solution for HapNodeJS or homebridge.
If it works there it should also work for us (both we and homebridge are based on HapNodeJS).

Also, have a look here
https://medium.com/@gepeto42/using-homekit-devices-across-vlans-and-subnets-aa5ae1024939

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Hi @Tazintosh where did you get with this?

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@caitken-com Nowhere, my native ethernet interface is maintain as inactive.
settings.js is set with uiHost: "10.80.10.2"

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Did the article Shaquu posted help any?
https://recyclebin.zip/posts/medium-posts-homekit-vlans/

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Well, this article seems only about setting up the right firewall rules on your router.
In my case, my Management network has access to all my RFC 1918 so I don't see why it would be blocked.
Also, all my Local Network devices can access HomeKit (sitting on Service Network).
Based on this two points, I don't yet understand why I get "no response" if I set the mDNS of Node-RED to my service network while my native ethernet interface with Management is enable.

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