From f9c2e97ec6611a302e46320c2d11f952bf12a540 Mon Sep 17 00:00:00 2001
From: Parahub AI <admin@parahub.io>
Date: Tue, 10 Feb 2026 15:22:59 +0000
Subject: [PATCH] =?UTF-8?q?fix(wifi):=20Fix=20mesh=20channels=20=E2=80=94?=
 =?UTF-8?q?=202.4GHz=3D1,=205GHz=3D36=20for=20all=20nodes?=
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All mesh nodes must share the same channel per band for batman-adv peering.
Bumps firmware to ph3.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 files/etc/uci-defaults/99-parahub-mesh | 12 +++++++++++-
 scripts/build.sh                       |  2 +-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/files/etc/uci-defaults/99-parahub-mesh b/files/etc/uci-defaults/99-parahub-mesh
index f38c445..ded4778 100755
--- a/files/etc/uci-defaults/99-parahub-mesh
+++ b/files/etc/uci-defaults/99-parahub-mesh
@@ -290,11 +290,21 @@ fi
 # Remove all existing wifi-iface sections
 while uci -q delete wireless.@wifi-iface[0]; do :; done
 
-# Enable radios (remove disabled flag)
+# Enable radios and set fixed channels (all nodes must share same channel for mesh peering)
 for radio in $RADIOS; do
     uci -q delete "wireless.${radio}.disabled" 2>/dev/null || true
 done
 
+# Fixed channels — all mesh nodes must be on the same channel per band
+# 2.4GHz: channel 1 (DFS-free, least congested of 1/6/11)
+# 5GHz: channel 36 (DFS-free, universal chipset support)
+if [ -n "$RADIO_2G" ]; then
+    uci set "wireless.${RADIO_2G}.channel=1"
+fi
+if [ -n "$RADIO_5G" ]; then
+    uci set "wireless.${RADIO_5G}.channel=36"
+fi
+
 # --- 2.4GHz radio: mesh backhaul + parahub.io/free AP ---
 if [ -n "$RADIO_2G" ]; then
     # Mesh interface on 2.4GHz
diff --git a/scripts/build.sh b/scripts/build.sh
index acfa94f..30cbd70 100755
--- a/scripts/build.sh
+++ b/scripts/build.sh
@@ -11,7 +11,7 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_DIR="$(dirname "$SCRIPT_DIR")"
 
 OPENWRT_VERSION="${OPENWRT_VERSION:-25.12.0-rc4}"
-PARAHUB_BUILD="2"
+PARAHUB_BUILD="3"
 FIRMWARE_VERSION="${OPENWRT_VERSION}-ph${PARAHUB_BUILD}"
 
 # ============================================================================