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  • bitdays.co.kr/2021/12/04/pi-%ed%8a%b9%ec%88%98-%e2%80%8b%e2%80%8b%ec%97%94%ec%a7%80%eb%8b%88%ec%96%b4%eb%a7%81-%ed%94%8c%eb%9d%bc%ec%8a%a4%ed%8b%b1-%ec%8b%9c%ec%9e%a5-%ed%81%ac%ea%b8%b0%ec%99%80-%ec%b5%9c%ea%b3%a0-%ea%b8%b0/ (port 80)