A #SmartHome should be completely independent of any internet connection.

[goetz@chaos.social]

@blindcoder
You need to compile #IPv6 into the 8266 manually. The online tasmota compiler does not allow for this.
@jwildeboer

[goetz@chaos.social]

@blindcoder @jwildeboer

For ESP8266 you need to add:

# user_config_override.h:
```
#ifndef USE_IPV6
#define USE_IPV6
#endif
```

# platformio.ini:
```
; -DPIO_FRAMEWORK_ARDUINO_LWIP2_HIGHER_BANDWIDTH_LOW_FLASH
-DPIO_FRAMEWORK_ARDUINO_LWIP2_IPV6_HIGHER_BANDWIDTH -DUSE_IPV6
```

This gives a GUA and LL #IPv6 addresses.
Unfortunately things like DHCPv6 or #PrivacyExtensionsforIPv6 is not available, due to #lwIP not supporting it yet.