DuckDNS add-on not starting with unavailable Internet

[ygorre]

Describe the issue you are experiencing

Current state

DuckDNS add-on crashes and do not start when Internet access is unavailable.

This bug arises mostly on power outages, when my RPi3 HaOS finishes booting before my Internet modem does. After that, I need to manually start the add-on (something not really possible when abroad with dynamic IP address).

Expected behavior

Add-on starts successfully and wait for proper network connection on such cases (e. g. by retrying after some minutes).

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

Which add-on are you reporting an issue with?

Duck DNS

What is the version of the add-on?

1.15.0

Steps to reproduce the issue

1. Power on the OS without Internet access.
2. DuckDNS add-on do not start automatically.
   ...

System Health information

No repairs available.

Anything in the Supervisor logs that might be useful for us?

No response

Anything in the add-on logs that might be useful for us?

s6-rc: info: service s6rc-oneshot-runner: starting
s6-rc: info: service s6rc-oneshot-runner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
# INFO: Using main config file /data/workdir/config
ERROR: Problem connecting to server (get for https://acme-v02.api.letsencrypt.org/directory; curl returned with 6)
EXPECTED value GOT EOF
s6-rc: info: service legacy-services: stopping
s6-rc: info: service legacy-services successfully stopped
s6-rc: info: service legacy-cont-init: stopping
s6-rc: info: service legacy-cont-init successfully stopped
s6-rc: info: service fix-attrs: stopping
s6-rc: info: service fix-attrs successfully stopped
s6-rc: info: service s6rc-oneshot-runner: stopping
s6-rc: info: service s6rc-oneshot-runner successfully stopped

Additional information

Add-on info has "Start on boot" and "Watchdog" checked. A simulation of the error I just made also indicates the system attempted to restart the add-on before stopping.

[CarlosGS]

Same here, cannot access Home Assistant until manually restarting the addon

[M0uC0]

I have the same problem.

Away from home when it happens.. new ip assigned by the isp when internet is back on...
No home access till i arrive at home and press "start" on it.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[edurenye]

This issue is important, this is a big bug

[alsFC]

It also occurs when the Let's Encrypt API is just not available. IMHO the Duck DNS Add-on should just ignore this, start without certificate evaluation and log a warning.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.