{"id":389,"date":"2025-04-15T16:38:00","date_gmt":"2025-04-15T07:38:00","guid":{"rendered":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=389"},"modified":"2025-10-13T11:18:55","modified_gmt":"2025-10-13T02:18:55","slug":"ipv6%ef%bc%88%e7%a7%bb%e8%a1%8c%e6%8a%80%e8%a1%93%ef%bc%89","status":"publish","type":"post","link":"https:\/\/ccna-curriculum.tech-village.co.jp\/?p=389","title":{"rendered":"IPv6\uff08\u79fb\u884c\u6280\u8853\uff09"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">IPv4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089IPv6\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3078\u306e\u79fb\u884c<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IPv6\u306f\u5c06\u6765\u7684\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u4e3b\u6d41\u3068\u306a\u308a\u307e\u3059\u304c\u3001\u65e2\u5b58\u306eIPv4\u3092\u4e00\u6c17\u306b\u7f6e\u304d\u63db\u3048\u308b\u3053\u3068\u306f\u56f0\u96e3\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u73fe\u5b9f\u7684\u306b\u306fIPv4\u3068IPv6\u3092\u4f75\u7528\u3057\u306a\u304c\u3089\u6bb5\u968e\u7684\u306b\u79fb\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u79fb\u884c\u3092\u652f\u3048\u308b\u4ee3\u8868\u7684\u306a\u6280\u8853\u306f\u30c7\u30e5\u30a2\u30eb\u30b9\u30bf\u30c3\u30af\u3001\u30c8\u30e9\u30f3\u30b9\u30ec\u30fc\u30bf\u3001\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u306e3\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IPv6\u79fb\u884c\u6280\u8853 &#8211; \u30c7\u30e5\u30a2\u30eb\u30b9\u30bf\u30c3\u30af<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30c7\u30e5\u30a2\u30eb\u30b9\u30bf\u30c3\u30af<\/span><\/strong>\u306f1\u3064\u306e\u6a5f\u5668\u3067IPv4\u3068IPv6\u306e\u4e21\u65b9\u3092\u5229\u7528\u53ef\u80fd\u306b\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002Cisco\u30eb\u30fc\u30bf\u3067\u306f1\u3064\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306bIPv4\u30a2\u30c9\u30ec\u30b9\u3068IPv6\u30a2\u30c9\u30ec\u30b9\u3092\u540c\u6642\u306b\u8a2d\u5b9a\u3067\u304d\u307e\u3059\u3002\u53d7\u4fe1\u3057\u305f\u30d1\u30b1\u30c3\u30c8\u306f\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u306e\u30bf\u30a4\u30d7\u30d5\u30a3\u30fc\u30eb\u30c9\uff08IPv4\u306f0x0800\u3001IPv6\u306f0x86DD\uff09\u3067\u8b58\u5225\u3055\u308c\u3001\u305d\u308c\u305e\u308c\u9069\u5207\u306b\u51e6\u7406\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u65b9\u6cd5\u306f\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u8a2d\u8a08\u304c\u5bb9\u6613\u306a\u305f\u3081\u3001\u5b9f\u969b\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IPv6\u79fb\u884c\u6280\u8853 &#8211; \u30c8\u30e9\u30f3\u30b9\u30ec\u30fc\u30bf<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30c8\u30e9\u30f3\u30b9\u30ec\u30fc\u30bf<\/span><\/strong>\u306fIPv4\u3068IPv6\u306e\u7570\u306a\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u9593\u306e\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3059\u308b\u6280\u8853\u3067\u3059\u3002\u4ee3\u8868\u7684\u306a\u65b9\u5f0f\u306b\u306f\u6b21\u306e3\u3064\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u65b9\u5f0f<\/th><th>\u8aac\u660e<\/th><\/tr><\/thead><tbody><tr><td>Proxy<\/td><td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3054\u3068\u306b\u4ee3\u7406\u901a\u4fe1\u3092\u884c\u3046\u3002Web\u30d7\u30ed\u30ad\u30b7\u3068\u540c\u69d8\u306e\u52d5\u4f5c<\/td><\/tr><tr><td>NAT-PT<\/td><td>\u30d1\u30b1\u30c3\u30c8\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u5909\u63db\u3068\u30a2\u30c9\u30ec\u30b9\u5909\u63db\u3092\u540c\u6642\u306b\u884c\u3046\u65b9\u5f0f<\/td><\/tr><tr><td>TCP Relay<\/td><td>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u3067\u901a\u4fe1\u3092\u4ef2\u4ecb\u3057\u3001\u30c7\u30fc\u30bf\u3092\u4e2d\u7d99\u3059\u308b\u65b9\u5f0f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">NAT-PT\uff08NAT-Protocol Translation\uff09\u306f\u3001IPv4\u30d1\u30b1\u30c3\u30c8\u3092IPv6\u30d1\u30b1\u30c3\u30c8\u306b\u5909\u63db\u3057\u3001\u30a2\u30c9\u30ec\u30b9\u3082\u540c\u6642\u306b\u66f8\u304d\u63db\u3048\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002DNS-ALG\uff08RFC2764\uff09\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u5229\u7528\u3055\u308c\u307e\u3059\u304c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5c64\u306e\u30c7\u30fc\u30bf\u5909\u63db\u306b\u5bfe\u5fdc\u3067\u304d\u306a\u3044\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\u3002Cisco\u30eb\u30fc\u30bf\u3067\u306f\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>(config)# ipv6 nat prefix 2001:db8::\/96<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">NAT-PT\u3067\u5229\u7528\u3067\u304d\u308b\u306e\u306f\/96\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u306b\u9650\u5b9a\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u306b\u4e00\u81f4\u3059\u308b\u5b9b\u5148\u3092\u6301\u3064IPv6\u30d1\u30b1\u30c3\u30c8\u306f\u5909\u63db\u5bfe\u8c61\u3068\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057Cisco\u3067\u306fNAT-PT\u306e\u5229\u7528\u306f\u63a8\u5968\u3055\u308c\u3066\u304a\u3089\u305a\u3001\u4ee3\u66ff\u6280\u8853\u3068\u3057\u3066NAT64\u306e\u5229\u7528\u304c\u9032\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u8a66\u9a13\u5bfe\u7b56\uff1a<br>\u30fb\u79fb\u884c\u306e\u57fa\u672c\u306f\u30c7\u30e5\u30a2\u30eb\u30b9\u30bf\u30c3\u30af\u304c\u6700\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u4e3b\u6d41<br>\u30fbNAT-PT\u306f\/96\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3001IPv4\u21d4IPv6\u5909\u63db\u3092\u884c\u3046<br>\u30fbCisco\u3067\u306fNAT-PT\u306f\u975e\u63a8\u5968\u3067\u3001\u73fe\u5728\u306fNAT64\u304c\u63a8\u5968\u3055\u308c\u308b<br>\u30fb\u30c7\u30fc\u30bf\u30ea\u30f3\u30af\u5c64\u306e\u30bf\u30a4\u30d7\u30d5\u30a3\u30fc\u30eb\u30c9\u3067IPv4\u3068IPv6\u3092\u8b58\u5225\uff08IPv4=0x0800\u3001IPv6=0x86DD\uff09<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">IPv6\u79fb\u884c\u6280\u8853 &#8211; \u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><span class=\"swl-marker mark_yellow\">\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/span><\/strong>\u306f\u3001IPv4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d4c\u7531\u3057\u3066IPv6\u901a\u4fe1\u3092\u884c\u3046\u4ed5\u7d44\u307f\u3067\u3059\u3002IPv6\u30d1\u30b1\u30c3\u30c8\u3092IPv4\u30d1\u30b1\u30c3\u30c8\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3066\u8ee2\u9001\u3059\u308b\u305f\u3081\u3001\u65e2\u5b58\u306eIPv4\u30a4\u30f3\u30d5\u30e9\u3092\u5229\u7528\u3057\u306a\u304c\u3089IPv6\u3092\u5c0e\u5165\u3067\u304d\u307e\u3059\u3002\u5927\u304d\u304f\u5206\u3051\u308b\u3068\u624b\u52d5\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u3068\u81ea\u52d5\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u306e2\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u624b\u52d5\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u624b\u52d5\u3067\u30c8\u30f3\u30cd\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u30eb\u30fc\u30bf\u9593\u3092IPv6\u3067\u63a5\u7d9a\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002\u30eb\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u9001\u4fe1\u5143\u3068\u5b9b\u5148\u306eIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u660e\u793a\u7684\u306b\u8a2d\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">\u624b\u52d5\u30c8\u30f3\u30cd\u30eb\uff08tunnel mode ipv6ip\uff09<\/span><\/strong><br>Point-to-Point\u578b\u3067IPv6\u30d1\u30b1\u30c3\u30c8\u306e\u307f\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u3057\u3066\u8ee2\u9001\u3057\u307e\u3059\u3002IPv6\u30d0\u30c3\u30af\u30dc\u30fc\u30f3\u304c\u5b58\u5728\u305b\u305a\u3001IPv4\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u7d4c\u7531\u3057\u3066\u30b5\u30a4\u30c8\u9593\u3092\u63a5\u7d9a\u3059\u308b\u5834\u5408\u306b\u9069\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">GRE\u30c8\u30f3\u30cd\u30eb\uff08tunnel mode gre ip\uff09<\/span><\/strong><br>IPv6\u30d1\u30b1\u30c3\u30c8\u3060\u3051\u3067\u306a\u304f\u591a\u69d8\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u30ab\u30d7\u30bb\u30eb\u5316\u53ef\u80fd\u3067\u3059\u3002\u305f\u3060\u3057\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5897\u3048\u308b\u305f\u3081\u3001IPv6\u30d0\u30c3\u30af\u30dc\u30fc\u30f3\u69cb\u7bc9\u306b\u306f\u3042\u307e\u308a\u4f7f\u308f\u308c\u307e\u305b\u3093\u3002\u591a\u69d8\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u307e\u3068\u3081\u308b\u5834\u5408\u306b\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u81ea\u52d5\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9b\u5148IPv6\u30a2\u30c9\u30ec\u30b9\u306a\u3069\u306e\u60c5\u5831\u3092\u3082\u3068\u306b\u3001\u30c8\u30f3\u30cd\u30eb\u5148\u3092\u81ea\u52d5\u7684\u306b\u6c7a\u5b9a\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u8907\u96d1\u306a\u624b\u52d5\u8a2d\u5b9a\u3092\u7701\u7565\u3067\u304d\u308b\u53cd\u9762\u3001\u5229\u7528\u306b\u306f\u5236\u7d04\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><span class=\"swl-marker mark_yellow\">6to4\u30c8\u30f3\u30cd\u30eb\uff08tunnel mode ipv6ip 6to4\uff09<\/span><\/strong><br>IPv6\u30a2\u30c9\u30ec\u30b9\u306b2002::\/16\u306e\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u3092\u4f7f\u7528\u3057\u3001IPv4\u30a2\u30c9\u30ec\u30b9\u3092\u7d44\u307f\u8fbc\u3080\u3053\u3068\u3067\u81ea\u52d5\u7684\u306b\u5b9b\u5148IPv4\u30a2\u30c9\u30ec\u30b9\u3092\u5c0e\u304d\u307e\u3059\u3002\u30b5\u30a4\u30c8\u9593\u306ePoint-to-Multipoint\u578b\u30c8\u30f3\u30cd\u30eb\u3068\u3057\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u4f7f\u7528\u3067\u304d\u308bIPv4\u30a2\u30c9\u30ec\u30b9\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u30a2\u30c9\u30ec\u30b9\u306b\u9650\u3089\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">ISATAP\u30c8\u30f3\u30cd\u30eb\uff08tunnel mode ipv6ip isatap\uff09<\/span><\/strong><br>IPv4\u3057\u304b\u306a\u3044LAN\u5185\u306e\u30db\u30b9\u30c8\u306bIPv6\u63a5\u7d9a\u3092\u53ef\u80fd\u306b\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002ISATAP\u30db\u30b9\u30c8\u306fISATAP\u30eb\u30fc\u30bf\u304b\u3089\u30d7\u30ec\u30d5\u30a3\u30c3\u30af\u30b9\u3092\u53d7\u3051\u53d6\u308a\u3001IPv6\u30a2\u30c9\u30ec\u30b9\u3092\u81ea\u52d5\u751f\u6210\u3057\u307e\u3059\u3002\u30a2\u30c9\u30ec\u30b9\u751f\u6210\u3067\u306f\u8b58\u5225\u5b50\u300c0000:5EFE\u300d\u3068\u81ea\u8eab\u306eIPv4\u30a2\u30c9\u30ec\u30b9\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308aIPv6\u901a\u4fe1\u304c\u53ef\u80fd\u3068\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">Teredo\u30c8\u30f3\u30cd\u30eb<\/span><\/strong><br>\u30db\u30b9\u30c8\u304c\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306eTeredo\u30b5\u30fc\u30d0\u3068\u9023\u643a\u3057\u3066\u4f5c\u3089\u308c\u308b\u81ea\u52d5\u30c8\u30f3\u30cd\u30eb\u3067\u3059\u3002IPv6\u30d1\u30b1\u30c3\u30c8\u3092IPv4\u306eUDP\u306b\u30ab\u30d7\u30bb\u30eb\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u8907\u6570\u306eNAT\u30eb\u30fc\u30bf\u3092\u8d8a\u3048\u3066IPv6\u901a\u4fe1\u3092\u884c\u3048\u307e\u3059\u3002Teredo\u306f\u30eb\u30fc\u30bf\u3067\u306f\u306a\u304f\u30db\u30b9\u30c8\u5074\u3067\u5b9f\u88c5\u3055\u308c\u308b\u6280\u8853\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong><span class=\"swl-marker mark_yellow\">IPv4\u4e92\u63db\u30c8\u30f3\u30cd\u30eb\uff08tunnel mode ipv6ip auto-tunnel\uff09<\/span><\/strong><br>\u307b\u3068\u3093\u3069\u4f7f\u308f\u308c\u306a\u3044\u65b9\u5f0f\u3067\u3001\u73fe\u5728\u3067\u306f\u5b9f\u7528\u7684\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"is-style-icon_pen 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