Hello Costas,

thanks for sending your patch here and once again for sending the same
patch as a pull request on github.

I really don't know, why your first mail did not appear in my inbox,
nor got displayed on our patchwork infrastructure.

After a quick code review and some basic testing with invalid data,
everything seems to work and I finally merged your patchset.

In addition to this I tagged a new version of ddns, which will be part
of one of the next upcomming Core updates.

Best regards,

-Stefan