int pos = 0;
        boolean foundEnd = false;
        while ( pos + 4 <= data.length ) {
            int avId = SMBUtil.readInt2(data, pos);
            int avLen = SMBUtil.readInt2(data, pos + 2);
            pos += 4;

            if ( avId == AvPair.MsvAvEOL ) {
                if ( avLen != 0 ) {
                    throw new CIFSException("Invalid avLen for AvEOL");
                }