Dev server

Test by LAN iperf3 server on Ubuntu26.04:

Test	ESP32-C6	LinkIt 7697
TCP upload, MTU 576	2.16 Mbit/s	0.01 Mbit/s
TCP download, MTU 576	0.25 Mbit/s	0.05 Mbit/s
TCP upload, MTU 1500	2.31 Mbit/s	0.02 Mbit/s
Sustainable UDP upload, MTU 576	2.00 Mbit/s	0.02 Mbit/s
Sustainable UDP download, MTU 576	1.00 Mbit/s	Below threshold
Idle RTT, 56-byte packets	2.87 ms	37.36 ms
Idle RTT, 512-byte packets	6.21 ms	10,026.57 ms

Conclusion: ESP32-C6 provides substantially higher throughput, lower latency, and better stability than LinkIt 7697.

Duo test:

- Duo → Server：2.96 Mbit/s receiver，0 retransmits
- Server → Duo：4.18 Mbit/s receiver，4 retransmits