# Write home or to whom?

**URL:** <https://discourse.nodered.org/t/write-home-or-to-whom/81135>\
**Category:** General\
**Created:** [8 September 2023 07:46 UTC](https://discourse.nodered.org/t/write-home-or-to-whom/81135 "2023-09-08T07:46:19Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Frida](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/frida/32/68250_2.png) [@Frida](https://discourse.nodered.org/u/Frida)\
**Post date:** [8 September 2023 07:46 UTC](https://discourse.nodered.org/t/write-home-or-to-whom/81135/1 "2023-09-08T07:46:19Z")

</div>

After the last updates of node-red, I have noticed that it has started writing home.  
I have not set up anything to write outside my home network.

On a rpiz2w

```auto
6 Sep 01:51:59 - [red] Uncaught Exception:
6 Sep 01:51:59 - [error] Error: send ENETUNREACH 224.0.0.251:5353
    at doSend (node:dgram:713:16)
    at defaultTriggerAsyncIdScope (node:internal/async_hooks:464:18)
    at afterDns (node:dgram:659:5)
    at processTicksAndRejections (node:internal/process/task_queues:84:21)
poul@PZW2-80:~ $ 

6 Sep 09:30:59 - [red] Uncaught Exception:
6 Sep 09:30:59 - [error] Error: send ENETUNREACH 224.0.0.251:5353
    at doSend (node:dgram:713:16)
    at defaultTriggerAsyncIdScope (node:internal/async_hooks:464:18)
    at afterDns (node:dgram:659:5)
    at processTicksAndRejections (node:internal/process/task_queues:84:21)
poul@PZW2-80:~ $ 

8 Sep 06:02:09 - [red] Uncaught Exception:
8 Sep 06:02:09 - [error] Error: send ENETUNREACH 224.0.0.251:5353
    at doSend (node:dgram:717:16)
    at defaultTriggerAsyncIdScope (node:internal/async_hooks:464:18)
    at afterDns (node:dgram:663:5)
    at processTicksAndRejections (node:internal/process/task_queues:83:21)
poul@PZW2-80:~ $ 

```

```auto
===================

8 Sep 09:28:14 - [info] Node-RED version: v3.1.0
8 Sep 09:28:14 - [info] Node.js version: v20.5.1
8 Sep 09:28:14 - [info] Linux 6.1.21-v7+ arm LE
8 Sep 09:28:17 - [info] Loading palette nodes
8 Sep 09:28:22 - [info] Dashboard version 1.0.2 started at /ui
8 Sep 09:28:28 - [info] Settings file : /home/poul/.node-red/settings.js
8 Sep 09:28:28 - [info] Context store : 'default' [module=memory]
8 Sep 09:28:28 - [info] User directory : /home/poul/.node-red
8 Sep 09:28:28 - [warn] Projects disabled : editorTheme.projects.enabled=false
8 Sep 09:28:28 - [info] Flows file : /home/poul/.node-red/flows.json
8 Sep 09:28:28 - [info] Server now running at http://127.0.0.1:1880/
8 Sep 09:28:28 - [warn] 

```

---

<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [8 September 2023 08:08 UTC](https://discourse.nodered.org/t/write-home-or-to-whom/81135/2 "2023-09-08T08:08:23Z")

</div>

If I was trying to figure this out, I would search the forum using 'dgram' and look at the topics that come up. If that didn't help I would:

1. start NR in safe mode (node.red --safe)
2. export the flow
3. edit the flow.json and search for the IP address  
if found you could determine what node was involved

if not found I would

1. start NR in safe mode (node.red --safe)
2. disable all the flow tabs and deploy.
3. enable the first flow tab and deploy  
if the error occurs, it is probably a node in that tab

If it doesn't occur

1. enable the next flow tab and deploy if the error occurs, it is probably a node in that tab. If it doesn't occur repeat this step.

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [8 September 2023 09:13 UTC](https://discourse.nodered.org/t/write-home-or-to-whom/81135/3 "2023-09-08T09:13:58Z")

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> [@Frida](#):
>
> I have noticed that it has started writing home

What does that mean? Writing home to where? Do you think Node-RED is gathering data and trying to dial home? (it is not!)

> [@Frida](#):
>
> `ENETUNREACH 224.0.0.251:5353`

That is a IPV4 multicast group IP.

That will be generated by a contrib node doing UDP multicast. Something like Alexa or Google Home.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [7 November 2023 09:14 UTC](https://discourse.nodered.org/t/write-home-or-to-whom/81135/4 "2023-11-07T09:14:46Z")

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