- protocol: add SubTunnelSDWANRaw subtype + EncodeRaw() for zero-copy IP packets
- client: tunReadLoop sends raw frames (no JSON/base64 overhead)
- client: SubTunnelSDWANRaw handler strips header and writes directly to TUN
- client: Stop() closes TUN file FIRST to unblock tunReadLoop
- server: SubTunnelSDWANRaw handler parses IPv4 src/dst from raw packet
- server: RouteSDWANPacket forwards as raw frame to destination
Verified: hcss(10.10.0.3) ↔ i-6986(10.10.0.2) ping 3/3, 0% loss, 46ms RTT
openclaw
489c2d191c