The question is in the title.
I’m trying to use AT command: “AT+QIDNSCFG Configure DNS Server Address”
For that the device needs to know what network it is on (IPv4 v.s. IPv6). How can de device know that?
you can run the command to query
AT+CGPADDR
If you are accessing an IPV6 server, you need to configure the DNS IP to an IPV6 address