Feature	Description	Implementation
L2 Discovery	UDP broadcast + multicast every 10s	`announce.c` → port 10001
Adoption	AES-128-CBC handshake with the controller	`inform.c` → `handle_response()`
WiFi Config	Creates WiFi networks from the controller via UCI	`wlan.c` → `wlan_apply_config()`
Band Steering	802.11k/v Neighbor Reports + BSS Transition	`wlan.c` → `apply_vap()`
Fast Roaming	802.11r FT with mobility_domain derived from MAC	`wlan.c` → `apply_vap()`
WPA3 / PMF	SAE, SAE-mixed, 802.11w 0/1/2	`wlan.c` → `sec_to_uci()`
WiFi Clients	MAC, signal, bitrate, bytes per VAP	`clients.c` → `iw station dump`
Wired Clients	MACs from bridge FDB	`clients.c` → `bridge fdb`
CPU / RAM	Real-time usage	`sysinfo.c` → `/proc/stat` + `/proc/meminfo`
Interfaces	Speed, duplex, rx/tx counters	`sysinfo.c` → `/proc/net/dev`
Channel / RF	Channel utilization, noise, tx_power	`sysinfo.c` → `iw survey dump`
LLDP Send	Custom frames via AF_PACKET raw socket	`lldp.c` → `lldp_send_frame()`
LLDP Read	Neighbors for UniFi topology	`lldp.c` → `lldpctl -f json`

Using the dev container

# OpenWRT build directory
cd /home/openwrt/openwrt

# clean Previous builds
make clean

# Compile
make

Changing Compiler Settings

# OpenWRT build directory
cd /home/openwrt/openwrt

# Change settings
make menuconfig

# export settings
./scripts/diffconfig.sh

# Paste settings into .devcontainer/openwrt.config file in the code
# Then rebuild the dev container by pressing F1 in VScode
# and typing rebuild and selecting rebuild dev container

Configuration

On The Accesspoint Run this to install the package:

# Remove old installation
apk -r del openuf 

# Install new version
apk add openuf-0.4.0-r1.apk --allow-untrusted

# Configure
vi /etc/openuf/openuf.conf

Example Configuration

controller_ip   = 192.168.1.1   # UniFi controller IP
lan_if          = br-lan        # Default Lan interface Name
ufmodel         = u6-inwall     # emulated model
inform_interval = 10            # inform interval
enable_announce = 1
enable_inform   = 1             # Enable logging to /var/log/openuf.log if set to 1

Glossary

TNBU

TNBU is the magic string/identifier at the start of the binary packet format used in this custom Inform protocol implementation.

CCQ

Client Connection Quality