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liangdodoliangdodo Member Posts: 15

I use the FwpsInjectTransportReceiveAsync function to inject inbound packets in FWPM_LAYER_DATAGRAM_DATA_V4, the FwpsInjectTransportReceiveAsync function returns success, but the STATUS_PROTOCOL_UNREACHABLE(0xc0000023e) error appears in the injection completion callback function.

But when I turn off my windows firewall I don't have this error anymore, does anyone know how to do this?

Rough code:

void NTAPI InboundDatagramDataComplete(
    IN void* context,
    IN OUT NET_BUFFER_LIST* netBufferList,
    IN BOOLEAN dispatchLevel

    if (!NT_SUCCESS(netBufferList->Status)){
        DbgPrint("fail,Status=%x", netBufferList->Status);//Error 0xc0000023e will be printed here

    FwpsFreeCloneNetBufferList(netBufferList, 0);


status = FwpsInjectTransportReceiveAsync(g_injectionHandle,
        NULL, 0, 0, AF_INET,

if (!NT_SUCCESS(status)) {
    DbgPrint("FwpsInjectTransportReceiveAsync() fail\n");
    goto Exit;


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