core: Cannot Connect to Elk M1

The problem

Prior to a recent upgrade (I don’t know which one), I had a working Elk M1. Now, it no longer connects.

What version of Home Assistant Core has the issue?

2022.4.6

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant OS

Integration causing the issue

ElkM1

Link to integration documentation on our website

https://www.home-assistant.io/integrations/elkm1

Diagnostics information

Example YAML snippet

No response

Anything in the logs that might be useful for us?

I have enabled debugging for the integration but these are the only relevant logs available.

Logger: elkm1_lib.elk
Source: /usr/local/lib/python3.9/site-packages/elkm1_lib/elk.py:129
First occurred: 11:26:13 AM (278 occurrences)
Last logged: 7:04:56 PM

ElkM1 at elks://elk.federation disconnected

Additional information

In the log above, the name of elk.federation is valid and resolvable from the home assistant server. I just happen to have a custom TLD set up in my internal DNS zone.

Thank you for looking into this.