{"id":2086,"date":"2026-07-08T06:12:59","date_gmt":"2026-07-08T06:12:59","guid":{"rendered":"https:\/\/www.vpascode.com\/ja\/docs\/uncategorized\/mermaid-js-packet-diagram-syntax-layout-guide\/"},"modified":"2026-07-08T06:12:59","modified_gmt":"2026-07-08T06:12:59","slug":"mermaid-js-packet-diagram-syntax-layout-guide","status":"publish","type":"ld_docs","link":"https:\/\/www.vpascode.com\/ja\/docs\/vpascode-docs\/mermaid-js-packet-diagram-syntax-layout-guide\/","title":{"rendered":"Mermaid.js \u30d1\u30b1\u30c3\u30c8\u56f3\u306e\u69cb\u6587\u3068\u30ec\u30a4\u30a2\u30a6\u30c8\u30ac\u30a4\u30c9"},"content":{"rendered":"<p>\u30d1\u30b1\u30c3\u30c8\u56f3\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30ca\u30ea\u30b9\u30c8\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u8005\u304c\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30c8\u30b3\u30eb\u3001\u30e1\u30e2\u30ea\u5272\u5f53\u3001\u307e\u305f\u306f\u30ab\u30b9\u30bf\u30e0\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30d1\u30b1\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc\u306e\u6b63\u78ba\u306a\u30d0\u30a4\u30ca\u30ea\u69cb\u9020\u3092\u53ef\u8996\u5316\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3059\u308b\u5c02\u9580\u7684\u306a\u53ef\u8996\u5316\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002Mermaid.js\u306b\u30cd\u30a4\u30c6\u30a3\u30d6\u306b\u5c0e\u5165\u3055\u308c\u305f\u3053\u306e\u30c4\u30fc\u30eb\u306f\u3001\u30af\u30ea\u30fc\u30f3\u3067\u30c6\u30ad\u30b9\u30c8\u30d9\u30fc\u30b9\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u5206\u89e3\u304b\u3089\u3001\u5fdc\u7b54\u6027\u304c\u3042\u308a\u3001\u5b8c\u5168\u306b\u6574\u5217\u3055\u308c\u305f\u30d3\u30c3\u30c8\u30ec\u30d9\u30eb\u306e\u30b0\u30ea\u30c3\u30c9\u30de\u30c3\u30d7\u3092\u81ea\u52d5\u7684\u306b\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3059\u308b\u3053\u3068\u3067\u3001\u9762\u5012\u306a\u624b\u4f5c\u696d\u306e\u30c6\u30fc\u30d6\u30eb\u4f5c\u6210\u3092\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n<h2>\u30d1\u30b1\u30c3\u30c8\u30b0\u30ea\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u306e\u7406\u89e3<\/h2>\n<p>\u6a19\u6e96\u7684\u306a\u81ea\u7531\u5f62\u5f0f\u306e\u30d5\u30ed\u30fc\u30c1\u30e3\u30fc\u30c8\u3068\u306f\u7570\u306a\u308a\u3001\u30d1\u30b1\u30c3\u30c8\u56f3\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30ad\u30f3\u30b0\u306eRFC\u306b\u76f4\u63a5\u57fa\u3065\u3044\u305f\u53b3\u5bc6\u306a\u6570\u5b66\u7684\u30b0\u30ea\u30c3\u30c9\u30b7\u30b9\u30c6\u30e0\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u30d3\u30c3\u30c8\u5e45\uff08\u6c34\u5e73\u8ef8\uff09\uff1a<\/strong> \u30ec\u30a4\u30a2\u30a6\u30c8\u30a8\u30f3\u30b8\u30f3\u306f\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5404\u884c\u309232\u30d3\u30c3\u30c8\u30b0\u30ea\u30c3\u30c9\u30b7\u30b9\u30c6\u30e0\uff08\u30d3\u30c3\u30c80\u304b\u308931\u307e\u3067\uff09\u306b\u81ea\u52d5\u7684\u306b\u5206\u5272\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u81ea\u52d5\u30d3\u30c3\u30c8\u8a08\u7b97\uff1a<\/strong> \u305d\u308c\u305e\u308c\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306b\u5bfe\u3057\u3066\u30d3\u30c3\u30c8\u9577\u3092\u5ba3\u8a00\u3059\u308b\u3060\u3051\u3067\u3088\u3044\u3067\u3059\u3002\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30a8\u30f3\u30b8\u30f3\u304c\u8a08\u7b97\u3092\u51e6\u7406\u3057\u307e\u3059\u2014\u2014\u96a3\u63a5\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u540c\u3058\u884c\u306b\u81ea\u52d5\u7684\u306b\u8a70\u3081\u8fbc\u307f\u3001\u7d2f\u7a4d\u30b5\u30a4\u30ba\u304c32\u30d3\u30c3\u30c8\u306e\u3057\u304d\u3044\u5024\u3092\u8d85\u3048\u308b\u3068\u3001\u6b21\u884c\u306b\u304d\u308c\u3044\u306b\u6298\u308a\u8fd4\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u57fa\u672c\u7684\u306a\u69cb\u6587\u69cb\u9020<\/h2>\n<p>\u3059\u3079\u3066\u306e\u30d1\u30b1\u30c3\u30c8\u30de\u30c3\u30d7\u306f\u3001<code>packet<\/code>\u3068\u3044\u3046\u5ba3\u8a00\u30d8\u30c3\u30c0\u30fc\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u53b3\u5bc6\u306a<code>\"\u30d5\u30a3\u30fc\u30eb\u30c9\u540d\": \u30d3\u30c3\u30c8\u30b5\u30a4\u30ba<\/code>\u3068\u3044\u3046\u30d1\u30bf\u30fc\u30f3\u306b\u5f93\u3063\u3066\u3001\u5404\u884c\u306b\u9806\u6b21\u30da\u30a2\u3067\u30d5\u30a3\u30fc\u30eb\u30c9\u3092\u5ba3\u8a00\u3057\u307e\u3059\u3002<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorSEzOTi3h5VJQMNA1tlJQCkstKs7Mz1MCiZjomgNFPD18wDwLXUNTIDeksiBVIT9NITi1qCwzORUsZWima2wIkssvScxR8EnNSy\/JUAIA9U8XCQ==\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Mermaid\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorSEzOTi3h5VJQMNA1tlJQetw84XHznsdNOx43L3\/cvFkJJGOiaw6U8fTwAfMsdA1NQQqbtoIUNk9+3LTz+Yp1TzuWgmUNzXSNDYHSz7f3v5y6\/XHjVCUAMLcnbQ==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">packet\r\n  0-3: \"\u30d0\u30fc\u30b8\u30e7\u30f3\"\r\n  4-7: \"IHL\"\r\n  8-15: \"\u30b5\u30fc\u30d3\u30b9\u7a2e\u5225\"\r\n  16-31: \"\u7dcf\u9577\u3055\"<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorSEzOTi3h5VJQMNA1tlJQetw84XHznsdNOx43L3\/cvFkJJGOiaw6U8fTwAfMsdA1NQQqbtoIUNk9+3LTz+Yp1TzuWgmUNzXSNDYHSz7f3v5y6\/XHjVCUAMLcnbQ==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNorSEzOTi3h5VJQMNA1tlJQCkstKs7Mz1MCiZjomgNFPD18wDwLXUNTIDeksiBVIT9NITi1qCwzORUsZWima2wIkssvScxR8EnNSy\/JUAIA9U8XCQ==\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Mermaid\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"sLdedxF\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-958\" decoding=\"async\" fetchpriority=\"high\" height=\"62\" sizes=\"(max-width: 1026px) 100vw, 1026px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb786f844.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb786f844.png 1026w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb786f844-300x18.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb786f844-1024x62.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb786f844-768x46.png 768w\" width=\"1026\"\/><\/p>\n<h2>\u69cb\u6587\u30ea\u30d5\u30a1\u30ec\u30f3\u30b9<\/h2>\n<p>\u4ee5\u4e0b\u306e\u8868\u306f\u3001Mermaid.js\u3067\u30d1\u30b1\u30c3\u30c8\u56f3\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u57fa\u76e4\u3068\u306a\u308b\u30c7\u30fc\u30bf\u30d1\u30e9\u30e1\u30fc\u30bf\u3068\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30ec\u30a4\u30a2\u30a6\u30c8\u30eb\u30fc\u30eb\u3092\u5206\u89e3\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<table border=\"1\" cellpadding=\"5\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>\u69cb\u6587\u8981\u7d20<\/th>\n<th>\u30bf\u30a4\u30d7\u8981\u4ef6<\/th>\n<th>\u8aac\u660e\u304a\u3088\u3073\u8996\u899a\u7684\u30b0\u30ea\u30c3\u30c9\u52d5\u4f5c<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>\u5ba3\u8a00<\/strong><\/td>\n<td>\u30ad\u30fc\u30ef\u30fc\u30c9\u8b58\u5225\u5b50<\/td>\n<td>\u30d3\u30c3\u30c8\u30ec\u30d9\u30eb\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u30ec\u30a4\u30a2\u30a6\u30c8\u30ef\u30fc\u30af\u30b9\u30da\u30fc\u30b9\u3092\u521d\u671f\u5316\u3057\u307e\u3059\u3002\u6b63\u78ba\u306a<code>packet<\/code>\u30d8\u30c3\u30c0\u30fc\u30d6\u30ed\u30c3\u30af\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30d5\u30a3\u30fc\u30eb\u30c9\u540d<\/strong><\/td>\n<td>\u5f15\u7528\u7b26\u3067\u56f2\u307e\u308c\u305f\u6587\u5b57\u5217<\/td>\n<td>\u30d6\u30ed\u30c3\u30af\u9818\u57df\u5185\u306b\u8868\u793a\u3055\u308c\u308b\u30e9\u30d9\u30eb\u3002\u5e38\u306b\u4e8c\u91cd\u5f15\u7528\u7b26\u3067\u56f2\u307e\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u30d3\u30c3\u30c8\u30b5\u30a4\u30ba<\/strong><\/td>\n<td>\u6b63\u306e\u6574\u6570<\/td>\n<td>\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u7d76\u5bfe\u30d3\u30c3\u30c8\u9577\uff08\u4f8b\uff1a<code>1<\/code> \u5358\u4e00\u30d3\u30c3\u30c8\u30d5\u30e9\u30b0\u7528\u3001<code>8<\/code> \u30d0\u30a4\u30c8\u7528\u3001<code>16<\/code> \u30b7\u30e7\u30fc\u30c8\u7528\uff09\u3002\u8996\u899a\u7684\u306a\u5e45\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td><strong>\u884c\u306e\u5207\u308a\u66ff\u3048\u30c8\u30ea\u30ac\u30fc<\/strong><\/td>\n<td>\u81ea\u52d5\u30c8\u30e9\u30c3\u30ab\u30fc<\/td>\n<td>\u7d50\u5408\u3055\u308c\u305f\u5408\u8a08\u30d3\u30c3\u30c8\u30b5\u30a4\u30ba\u304c32\u30d3\u30c3\u30c8\u306e\u500d\u6570\u306b\u9054\u3059\u308b\u305f\u3073\u306b\u81ea\u52d5\u7684\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr\/>\n<h2>\u5b9f\u4e16\u754c\u306e\u30d6\u30eb\u30fc\u30d7\u30ea\u30f3\u30c8\uff1aIPv4\u30d1\u30b1\u30c3\u30c8\u30d8\u30c3\u30c0\u30fc\u69cb\u9020\u30de\u30c3\u30d7<\/h2>\n<p>\u3053\u306e\u5305\u62ec\u7684\u306a\u30d6\u30eb\u30fc\u30d7\u30ea\u30f3\u30c8\u306f\u3001\u6a19\u6e96\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u30d1\u30b1\u30c3\u30c8\u69cb\u9020\uff08IPv4\uff09\u3092\u8ffd\u8de1\u3057\u307e\u3059\u3002\u30de\u30eb\u30c1\u30d3\u30c3\u30c8\u30d5\u30a3\u30fc\u30eb\u30c9\u3001\u5358\u4e00\u30d3\u30c3\u30c8\u30d5\u30e9\u30b0\u3001\u304a\u3088\u3073\u5927\u304d\u306a16\u30d3\u30c3\u30c8\u30d6\u30ed\u30c3\u30af\u304c\u3001\u6a19\u6e96\u306e32\u30d3\u30c3\u30c8\u6c34\u5e73\u30b0\u30ea\u30c3\u30c9\u30ec\u30a4\u30a2\u30a6\u30c8\u5185\u3067\u9806\u6b21\u7d44\u307f\u5408\u308f\u3055\u308c\u308b\u69d8\u5b50\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u300232\u30d3\u30c3\u30c8\u306e\u30de\u30fc\u30ab\u30fc\u306b\u9054\u3059\u308b\u30d5\u30a3\u30fc\u30eb\u30c9\u306f\u3001\u81ea\u52d5\u7684\u306b\u6b21\u306e\u884c\u306b\u30b9\u30e0\u30fc\u30ba\u306b\u79fb\u884c\u3057\u307e\u3059\u3002<\/p>\n<div class=\"vpascode-viewer-container vpascode-fancy-active\">\n<div class=\"vpascode-header\">\n<span class=\"vpascode-lang-label\">Mermaid<\/span><br \/>\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNo9jssKwjAQRfeC\/xC6H2j6rluhVCgoWNyHdNKGPlKSKPj3Jim4vPcMd87O+Iz2fCIkhvRCohdqI9UW+SaD0jW3tgupApq72H93JEqQJ+qP5BgQLSClninLFtLhNtopgDSBLGwMuFkpJGf2P15BHjvULGw0ockpFF6h0Wxc3T25C2HQBlY4l\/ChP2TKBMra5YdWVnG1HIYx1F6xRTagJtcJ+Wzea\/QDkn45+g==\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 8px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Mermaid\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<div class=\"vpascode-code-wrapper\">\n            <div class=\"vpascode-viewer-container vpascode-fancy-active\">\r\n                                <div class=\"vpascode-header\">\r\n                    <span class=\"vpascode-lang-label\">Mermaid<\/span>\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNpNTzsKwkAQ7QXvENIP5P\/xBAqWuYCIlY2FBzA7TcqABFNqIYlKVBBR0dsMwXgLdycIlu83895sNJ5O5t2Ophlg9zSdMCV8kbgTFoQXXSkO+FIZ9IeMAjBdZRRXZcQlice7PNbJllXTA9uUcp0mTZl8shvFGQu2BY4601T5z+sE4Br8MyPckTgz65rg2f8s4UY2IUxI7BUpnoQoIbs9WU79i6K2nW+BH3J6RVhxSEYPbXMDQq6OOV9Y8ICYRKGgOPGktf4FMbF0uA==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 8px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n                                <div class=\"vpascode-code-wrapper\">\r\n                    <pre class=\"lang-mermaid\"><code class=\"language-mermaid\" data-language=\"mermaid\" class=\"language-mermaid\">packet\r\n  0-3: \"\u30d0\u30fc\u30b8\u30e7\u30f3\"\r\n  4-7: \"IHL\"\r\n  8-15: \"\u30b5\u30fc\u30d3\u30b9\u7a2e\u5225\"\r\n  16-31: \"\u5408\u8a08\u9577\u3055\"\r\n  32-47: \"\u8b58\u5225\"\r\n  48-50: \"\u30d5\u30e9\u30b0\"\r\n  51-63: \"\u30d5\u30e9\u30b0\u30e1\u30f3\u30c8\u30aa\u30d5\u30bb\u30c3\u30c8\"\r\n  64-71: \"TTL\"\r\n  72-79: \"\u30d7\u30ed\u30c8\u30b3\u30eb\"\r\n  80-95: \"\u30d8\u30c3\u30c0\u30fc\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\"<\/code><\/pre>                <\/div>\r\n                <div class=\"vpascode-actions\">\r\n                    <a href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNpNTzsKwkAQ7QXvENIP5P\/xBAqWuYCIlY2FBzA7TcqABFNqIYlKVBBR0dsMwXgLdycIlu83895sNJ5O5t2Ophlg9zSdMCV8kbgTFoQXXSkO+FIZ9IeMAjBdZRRXZcQlice7PNbJllXTA9uUcp0mTZl8shvFGQu2BY4601T5z+sE4Br8MyPckTgz65rg2f8s4UY2IUxI7BUpnoQoIbs9WU79i6K2nW+BH3J6RVhxSEYPbXMDQq6OOV9Y8ICYRKGgOPGktf4FMbF0uA==\" \r\n                       target=\"_blank\" \r\n                       rel=\"noopener noreferrer\" \r\n                       class=\"vpascode-fancy-btn\">\r\n                        <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.5\" stroke-linecap=\"round\" stroke-linejoin=\"round\" style=\"margin-right: 6px;\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg>\r\n                        <span>Edit Mermaid in VPasCode<\/span>\r\n                    <\/a>\r\n                <\/div>\r\n            <\/div>\r\n            \n<\/p><\/div>\n<div class=\"vpascode-actions\">\n<a class=\"vpascode-fancy-btn\" href=\"https:\/\/www.vpascode.com\/editor\/#mermaid:eNo9jssKwjAQRfeC\/xC6H2j6rluhVCgoWNyHdNKGPlKSKPj3Jim4vPcMd87O+Iz2fCIkhvRCohdqI9UW+SaD0jW3tgupApq72H93JEqQJ+qP5BgQLSClninLFtLhNtopgDSBLGwMuFkpJGf2P15BHjvULGw0ockpFF6h0Wxc3T25C2HQBlY4l\/ChP2TKBMra5YdWVnG1HIYx1F6xRTagJtcJ+Wzea\/QDkn45+g==\" rel=\"noopener noreferrer\" target=\"_blank\"><br \/>\n<svg fill=\"none\" height=\"14\" stroke=\"currentColor\" stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2.5\" style=\"margin-right: 6px;\" viewbox=\"0 0 24 24\" width=\"14\"><path d=\"M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7\"><\/path><path d=\"M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z\"><\/path><\/svg><br \/>\n<span>VPasCode\u3067Mermaid\u3092\u7de8\u96c6<\/span><br \/>\n<\/a>\n<\/div>\n<\/div>\n<p id=\"WSZphUv\"><img alt=\"\" class=\"alignnone size-full wp-image-959\" decoding=\"async\" height=\"156\" sizes=\"(max-width: 1026px) 100vw, 1026px\" src=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb824d711.png\" srcset=\"https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb824d711.png 1026w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb824d711-300x46.png 300w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb824d711-1024x156.png 1024w, https:\/\/www.vpascode.com\/wp-content\/uploads\/2026\/07\/img_6a4deb824d711-768x117.png 768w\" width=\"1026\"\/><\/p>\n<hr\/>\n<p><em><strong>\u69cb\u6587\u306e\u30d2\u30f3\u30c8\uff1a<\/strong> \u5358\u4e00\u306e\u5ba3\u8a00\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u304c32\u30d3\u30c3\u30c8\u3088\u308a\u5927\u304d\u3044\u5834\u5408\uff08\u305f\u3068\u3048\u307064\u30d3\u30c3\u30c8\u306e\u6697\u53f7\u5316\u30bd\u30eb\u30c8\u3084\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7\u306a\u3069\uff09\u3001\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u30a8\u30f3\u30b8\u30f3\u306f\u305d\u306e\u30d6\u30ed\u30c3\u30af\u3092\u8907\u6570\u306e\u9023\u7d9a\u3059\u308b\u884c\u306b\u308f\u305f\u3063\u3066\u6ed1\u3089\u304b\u306b\u6298\u308a\u8fd4\u3057\u3001\u5782\u76f4\u65b9\u5411\u306b\u4f38\u3070\u3057\u3001\u8aad\u307f\u3084\u3059\u3055\u3092\u4fdd\u3064\u305f\u3081\u306b\u660e\u78ba\u306a\u63a5\u7d9a\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/em><\/p>\n<hr\/>\n<h2>\u4e00\u822c\u7684\u306a\u69cb\u6587\u306e\u843d\u3068\u3057\u7a74\u3068\u30b7\u30b9\u30c6\u30e0\u5236\u7d04<\/h2>\n<p>\u975e\u5e38\u306b\u6b63\u78ba\u306a\u30d0\u30a4\u30c8\u30ec\u30d9\u30eb\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30de\u30c3\u30d7\u3092\u8a2d\u8a08\u3059\u308b\u969b\u306b\u306f\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5ff5\u982d\u306b\u7f6e\u3044\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n<ul>\n<li><strong>\u5fc5\u9808\u306e\u5f15\u7528\u7b26\u30e9\u30c3\u30d1\u30fc\uff1a<\/strong> \u3059\u3079\u3066\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u8a18\u8ff0\u30c6\u30ad\u30b9\u30c8\u6587\u5b57\u5217\u306f\u3001\u4e8c\u91cd\u5f15\u7528\u7b26\u3067\u56f2\u307e\u308c\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u5f15\u7528\u7b26\u3092\u7701\u7565\u3059\u308b\u3068\u3001\u5373\u5ea7\u306b\u69cb\u6587\u89e3\u6790\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u7121\u52b9\u306a\u6587\u5b57\u5217\u30d3\u30c3\u30c8\u30b5\u30a4\u30ba\uff1a<\/strong> \u30b3\u30ed\u30f3\u533a\u5207\u308a\u306e\u5f8c\u306e\u5024\u306e\u539a\u3055\u5272\u308a\u5f53\u3066\u306f\u3001\u305d\u306e\u307e\u307e\u306e\u672a\u5f15\u7528\u306e\u6574\u6570\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u5c0f\u6570\u3084\u30a2\u30eb\u30d5\u30a1\u30d9\u30c3\u30c8\u30b5\u30a4\u30ba\uff08\u4f8b\uff1a<code>\"Data\": 8bits<\/code>\uff09\u3092\u6e21\u3059\u3068\u3001\u56f3\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u505c\u6b62\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30b0\u30ea\u30c3\u30c9\u7aef\u90e8\u306e\u6574\u5217<\/strong> \u5747\u4e00\u3067\u7bb1\u578b\u306e\u30d8\u30c3\u30c0\u30fc\u30c0\u30a4\u30a2\u30b0\u30e9\u30e0\u3092\u5f97\u308b\u306b\u306f\u3001\u7d50\u5408\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u5408\u8a08\u304c32\u306e\u500d\u6570\u306b\u3061\u3087\u3046\u3069\u4e00\u81f4\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u672a\u5272\u308a\u5f53\u3066\u306e\u30d3\u30c3\u30c8\u304c\u6b8b\u308b\u884c\u3092\u6b8b\u3057\u3066\u304a\u304f\u3068\u3001\u898b\u305f\u76ee\u304c\u4e0d\u5747\u4e00\u306a\u7d42\u7aef\u30d6\u30ed\u30c3\u30af\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li><strong>\u30b9\u30b1\u30fc\u30eb\u30d3\u30e5\u30fc\u306e\u5236\u7d04\uff1a<\/strong> \u30a8\u30f3\u30b8\u30f3\u306f\u30ec\u30a4\u30a2\u30a6\u30c8\u5e45\u3092\u52d5\u7684\u306b\u8a08\u7b97\u3057\u307e\u3059\u304c\u3001\u8d85\u9577\u306e\u30c6\u30ad\u30b9\u30c8\u8aac\u660e\u3092\u5c0f\u3055\u306a1\u30d3\u30c3\u30c8\u307e\u305f\u306f2\u30d3\u30c3\u30c8\u306e\u30d6\u30ed\u30c3\u30af\u306b\u8a70\u3081\u8fbc\u3080\u3068\u3001\u30bf\u30a4\u30d7\u30b0\u30e9\u30d5\u30a3\u304c\u5207\u308a\u6368\u3066\u3089\u308c\u305f\u308a\u3001\u8996\u899a\u7684\u306b\u3054\u3061\u3083\u3064\u3044\u305f\u308a\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u5c0f\u3055\u306a\u30d3\u30c3\u30c8\u6570\u306e\u30e9\u30d9\u30eb\u306f\u7c21\u6f54\u306b\u4fdd\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u30d1\u30b1\u30c3\u30c8\u56f3\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a8\u30f3\u30b8\u30cb\u30a2\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30ca\u30ea\u30b9\u30c8\u3001\u30b7\u30b9\u30c6\u30e0\u958b\u767a\u8005\u304c\u3001&#8230;<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":21,"template":"","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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