Forked from [gist mcarpenterjr/godaddy_ddns.sh](https://gist.github.com/mcarpenterjr/1dedf9f9f842710ba5f07937ef4f5ae49)

Changes:
* usage of wtfismyip.com
* added IPv6 support (for the poor people which ISP is regularly changing the ipv6 ranges)
* lower ttl (600)