Responding again in case it helps other.

Eventually I did manage to find an obscure reference (not in the latest esp-idf manual) that enables a static IPV6 address to be configured. The code for the relevant wifi setup function in my code is provided here:



// Static IPv6 configuration
#define ...

Thanks very much Boarchuz for taking the trouble to respond. That indeed was the problem, now solved.

esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_ON);
esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_PERIPH, ESP_PD_OPTION_OFF);

esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_SLOW_MEM, ESP_PD_OPTION ...

Hi Folks
Using ESP-IDF on an ESP32S2 when any of the power domain control statements in the following function are set to off the device crashes with:
assert failed: esp_sleep_pd_config sleep_modes.c:1839 (refs >= 0)
If they are all set to auto the device deep sleeps normally.
Power consumption is ...

Partly answering myself. To enable SLAAC global addresses it is necessary to set a kconfig setting using menuconfig as described here:
https://github.com/espressif/arduino-esp32/issues/6626

"On current ESP-IDF version, I can configure sample projects to receive IPv6 either via SLAAC or DCHP6 via ...

Hi All
The latest ESP FAQ Handbook says: "If it is a global static IP, both IPv6 and IPv4 support manual configuration"
However I've not been able to discover how to successfully achieve this, particularly to establish a WiFi connection with an ESP32 board.
Rather than static the preference is ...