Enabling IPv6 SLAAC option for arduino-esp32 by default

[sanmira]

Hardware:

Board	ESP32-POE
Core Installation version	2.0.0
IDE name	Platform.io
Flash Frequency	40Mhz
PSRAM enabled	no
Upload Speed	115200
Computer OS	Windows 10

Description:

I was trying to configure IPv6 client on my ESP32 device and faced an issue with device's inability to obtain a global IPv6 address.
After investigation I've found that for the brebuilded ESP-IDF SDK "CONFIG_LWIP_IPV6_AUTOCONFIG" flag was not set (SLAAC option in the menuconfig).

I was able to rebuild the LwIP library manually with correct configuration. After that IPv6 started working as expected and I was able to get global IPv6 address using tcpip_adapter_get_ip6_global() function.

Can we enable the SLAAC option before building the ESP-IDF SDK for Arduino by default?
Because, without this option IPv6 client is unusable with Arduino if I understand it correctly.

[VojtechBartoska]

Hello @sanmira, thanks for your feature request. It needs more investigation from our side. Are you able to provide a code for testing this?

[VojtechBartoska]

Please check merged PR which can solve your issue.

espressif/esp32-arduino-lib-builder#67

It will be available in next release 2.0.4.