INWX uses https://dyndns.inwx.com/nic/update?myip=<ipaddr>&myipv6=<ip6addr> as update_url.
Both, the IPv4 and the IPv6 address have to be updated in a single call to the API.
KeeneticOS seems to send the IPv4 address and no IPv6 address.
How can we enable IPv6 for DynDNS?
Thanx for any hint!