Function decodeZigbeeNWKFrameControl

decodeZigbeeNWKFrameControl(
data: Buffer,
offset: number,
): [ZigbeeNWKFrameControl, offset: number]
Decode Zigbee NWK frame control field. HOT PATH: Called for every incoming Zigbee NWK frame. 05-3474-23 R23.1, Table 3-19 (NWK frame control field)

SPEC COMPLIANCE NOTES:
- ✅ Extracts protocol version, discover route, source route, and security bits per Zigbee PRO
- ✅ Surfaces end-device initiator bit introduced in r21 for parent-loss detection
- ⚠️ Leaves multicast control parsing to later stages since Zigbee seldom uses legacy flag DEVICE SCOPE: All logical devices
Parameters
- data: Buffer
- offset: number
Returns [ZigbeeNWKFrameControl, offset: number]
- Defined in src/zigbee/zigbee-nwk.ts:298