pub unsafe extern "C" fn WinDivertSendEx(
    handle: HANDLE,
    pPacket: *const c_void,
    packetLen: u32,
    pSendLen: *mut u32,
    flags: u64,
    pAddr: *const WINDIVERT_ADDRESS,
    addrLen: u32,
    lpOverlapped: *mut OVERLAPPED
) -> BOOL
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Check the official docs