This issue is minor for me, just to point that the code should do better validating its inputs the package wget-ssl may not be present on the device (or it should be mandatory). The long delay for recovery is abnormal however.
> Furthermore, it would be helpful to know if the DDNS service and other services still work when this event appears
DDNS doesn't do what I expect, ie registering an IPv6 address on no-ip.com. But this is another issue.
> It would also be good to have more details about the steps you followed to get these log messages
Unfortunately I have no idea about a precise sequence.
> and know if you recently tried to upgrade your service packages
Pristine 07.01.4 version.