Reverts merge ae045395 (feat/flex-ipv6, PR #25). Enabling IPv6 joins the
device into IPv6 multicast/ND processing; on multicast-heavy LANs (e.g.
with a Thread/Matter border router advertising a ULA prefix) inbound
bursts land in dynamic WiFi RX buffers in internal heap. Measured on a
Station G2 with 4 WSS brokers: min-free floor dropped 36 KB -> 18 KB,
largest free block pinned below the 16 KB publish threshold for minutes
at a time, 523 dropped publishes in 15 minutes. With IPv6 disabled the
floor and max-alloc recovered and publish skips stopped.
The feature only fed the wifi.status display line — no transport uses
IPv6 (all brokers connect over IPv4), so the fleet risk (network-
dependent degradation on unknown home LANs) buys nothing. Revisit after
the Arduino core 3.x / IDF 5.x move if IPv6 transport is ever needed;
the branch remains at feat/flex-ipv6.
Kept from the merge: the wifi.status uptime append now computes the
actual remaining space in the 160-byte reply buffer instead of assuming
a hardcoded 128, fixing a latent overflow of the snprintf bound.
Refactored the handling of observer-related settings by moving them from
NodePrefs to a new MQTTPrefs structure. This change centralizes MQTT,
WiFi, timezone, SNMP, and alert configurations, improving code organization
and maintainability. The new structure allows for better separation of
concerns and prepares the codebase for future enhancements.
Refactored the CommonCLI class to separate observer-related command
handling into CommonCLI_Observer.cpp. This change improves code
organization and maintainability by isolating MQTT, WiFi, and other
observer-specific commands from the main CLI logic.
agessaman