DNS-O-Matic add-on

I found the trick for the Duo:
- In general the cron environment is not the same as the shell environment, therefore some paths in the cron environment are not set as the normal shell.
- In this case the path to launch "curl" command is not set and the command does not work
- In order to have the curl command correctly in the script is mandatory to add the path before the curl command
- Changing the line:
IP=$(curl -s http://myip.dnsomatic.com/)
in
IP=$(/usr/local/bin/curl -s http://myip.dnsomatic.com/)

and
RETURN=$(curl -k -s https://${USER}:${PASS}@updates.dnsomatic.com/nic/update?hostname=${HOSTNAME}&myip=$IP&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG)
in
RETURN=$(/usr/local/bin/curl -k -s https://${USER}:${PASS}@updates.dnsomatic.com/nic/update?hostname=${HOSTNAME}&myip=$IP&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG)

is enough to have the script correctly working on the Duo.

I kindly ask super-poussin to update the addon.
Hope the above is of any help.
Regards
Sergio