The shim holds 10.0.50.47/24, which gives two equal connected 10.0.50.0/24 routes,
and ens18's wins. Host-to-HA traffic therefore left via the macvlan parent and was
dropped. HA lost MQTT to the broker on this host on 2026-08-19, 2026-09-21 and
2026-09-25 (the last lasted two days). This adds an ifupdown if-up.d hook that
routes 10.0.50.46/32 via macvlan-shim; /etc/network/interfaces is not edited.
Verified: the route resolves via the shim, the host pings HA, HA reaches :1883,
and HA reconnected to the broker. Diagnosis by ha-dev.
Also corrects the zigbee2mqtt acceptance note, which had wrongly reported HA as
connected.
Requested by ha-dev; approved by Prime in this session. Radio: SLZB-MR1U chip 0
(EFR32MG21, EmberZNet 8.0.2) at tcp://10.0.90.10:6638, adapter ember. A fresh
network was formed on channel 25, PAN 0xCFF4. The broker is reached as mosquitto
user zigbee2mqtt, with HA discovery on homeassistant/. The frontend on :8099 is
token-protected.
State and the network key stay host-only in /opt/docker/data/zigbee2mqtt
(root 0700, restic). The repo carries only compose, .env.example and the README.
configuration.yaml refers to the secrets as !secret.yaml, and those references
survived Z2M's v4->v5 settings migration.
vh