An IPv6 ddns client for esp8266
If you don't have a NAS or an openwrt router, you can run the DDNS client on a cheap esp8266 chip.
You should register at https://dynv6.com/ and add a HTTP Token at https://dynv6.com/keys.
It can change the prefix of all records in a zone.
Remenber to change the const strings in main.cpp.
If you are using PlatformIO, add -D PIO_FRAMEWORK_ARDUINO_LWIP2_IPV6_LOW_MEMORY to build_flags in platformio.ini.
build_flags =
-D PIO_FRAMEWORK_ARDUINO_LWIP2_IPV6_LOW_MEMORY
If you are using Arduino IDE, select a LwIP option with IPv6.
