Open2023/11/12にコメント追加1protocol RFCkkk7772023/11/12に更新IP : https://datatracker.ietf.org/doc/html/rfc791 checksum : https://datatracker.ietf.org/doc/html/rfc1071 返信を追加
kkk7772023/11/12に更新IP : https://datatracker.ietf.org/doc/html/rfc791 checksum : https://datatracker.ietf.org/doc/html/rfc1071 返信を追加
