[ungzd]

Seems that both "official" SDK for esp8266 and its Arduino port support ipv6 out of the box: https://github.com/esp8266/Arduino/pull/5136.

esp8266-nonos-sdk/esp8266-rtos-sdk/esp8266-arduino uses lwip as tcp/ip stack, which supports ipv6.

[fulafel]

Awesome. The Arduino port "IPv6 support" issue was closed 9 days ago too. No other IPv6 related issues reported yet. Off to look for reports from elsewhere of people using it...

The Espressif 8266 SDK docs make no mention of IPv6, does it really work there? (https://www.espressif.com/sites/default/files/documentation/... linked from https://www.espressif.com/en/products/software/esp-sdk/resou...)

I only found one example for the Espressif-provided RTOS, at https://github.com/IPv6-ESP8266/IPv6-ESP8266 . The example says it only works in a IPv6-only network and it's using link-local addresses, which kind of defeats the point of IPv6. No idea if these reflect limitations of the stack. It's a start at least :)