{"id":1717,"date":"2026-10-29T05:00:00","date_gmt":"2026-10-28T20:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1717"},"modified":"2026-10-26T05:18:19","modified_gmt":"2026-10-25T20:18:19","slug":"qs-happy-eyeballs-v2-connection-delay","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1717","title":{"rendered":"Happy Eyeballs v2\u306f\u3069\u3046\u5f85\u3061\u6642\u9593\u3092\u6e1b\u3089\u3059\u306e\u304b\u2014\u2014IPv6\u3068IPv4\u306e\u63a5\u7d9a\u3092\u305a\u3089\u3057\u3066\u8a66\u3059"},"content":{"rendered":"<p>Web\u30b5\u30a4\u30c8\u3092\u958b\u304f\u3068\u304d\u3001\u540c\u3058\u540d\u524d\u304b\u3089\u8907\u6570\u306e\u63a5\u7d9a\u5148\u304c\u898b\u3064\u304b\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002IPv6\u3068IPv4\u306e\u4e21\u65b9\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3063\u3066\u3044\u3066\u3082\u3001\u4e21\u65b9\u306e\u7d4c\u8def\u304c\u6b63\u5e38\u306b\u4f7f\u3048\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u6700\u521d\u306b\u9078\u3093\u3060\u5b9b\u5148\u304b\u3089\u8fd4\u4e8b\u304c\u6765\u306a\u3044\u3068\u304d\u3001\u305d\u306e\u5931\u6557\u304c\u78ba\u5b9a\u3059\u308b\u307e\u3067\u6b21\u306e\u5b9b\u5148\u3092\u8a66\u305b\u306a\u3051\u308c\u3070\u3001\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b\u307e\u3067\u306e\u5f85\u3061\u6642\u9593\u3082\u9577\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>Happy Eyeballs v2\u306f\u3001\u63a5\u7d9a\u5148\u3092\u9806\u756a\u306b\u8a66\u3057\u306a\u304c\u3089\u3001\u8a66\u884c\u306e\u6642\u9593\u3092\u5c11\u3057\u305a\u3064\u91cd\u306d\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002RFC 8305\u3067\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u3053\u306e\u65b9\u6cd5\u3092\u3001DNS\u3067\u5b9b\u5148\u3092\u8abf\u3079\u308b\u6bb5\u968e\u3068\u3001\u5b9f\u969b\u306b\u3064\u306a\u304c\u308b\u304b\u78ba\u304b\u3081\u308b\u6bb5\u968e\u306b\u5206\u3051\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<section class=\"influvetor-quick-summary\" aria-label=\"\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>IPv6\u3068IPv4\u306e\u5019\u88dc\u3092\u4f7f\u3044\u3001\u5148\u306e\u63a5\u7d9a\u8a66\u884c\u306e\u5931\u6557\u3092\u5f85\u3061\u5207\u3089\u305a\u306b\u3001\u6b21\u306e\u5019\u88dc\u3078\u306e\u8a66\u884c\u3092\u59cb\u3081\u307e\u3059\u3002<\/li>\n<li>DNS\u5fdc\u7b54\u3092\u5f85\u306450\u30df\u30ea\u79d2\u3068\u3001\u63a5\u7d9a\u8a66\u884c\u3092\u305a\u3089\u3059250\u30df\u30ea\u79d2\u306f\u3001RFC\u304c\u793a\u3059\u5225\u3005\u306e\u63a8\u5968\u5024\u3067\u3059\u3002\u3069\u306e\u5b9f\u88c5\u3067\u3082\u56fa\u5b9a\u306e\u5024\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u63a5\u7d9a\u958b\u59cb\u6642\u306e\u5f85\u3061\u6642\u9593\u3092\u6e1b\u3089\u305b\u3066\u3082\u3001\u305d\u306e\u5f8c\u306e\u901a\u4fe1\u54c1\u8cea\u3084Web\u30b5\u30fc\u30d3\u30b9\u306e\u6b63\u5e38\u52d5\u4f5c\u307e\u3067\u4fdd\u8a3c\u3059\u308b\u4ed5\u7d44\u307f\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u5b9b\u5148\u304c\u5206\u304b\u308b\u3053\u3068\u3068\u3001\u305d\u3053\u3078\u3064\u306a\u304c\u308b\u3053\u3068<\/h2>\n<p>DNS\u306f\u3001\u30b5\u30a4\u30c8\u306e\u540d\u524d\u306b\u5bfe\u5fdc\u3059\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u8abf\u3079\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002IPv6\u306e\u30a2\u30c9\u30ec\u30b9\u306fAAAA\u30ec\u30b3\u30fc\u30c9\u3001IPv4\u306e\u30a2\u30c9\u30ec\u30b9\u306fA\u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u5f97\u3089\u308c\u307e\u3059\u3002\u540d\u524d\u306b\u4f4f\u6240\u304c\u8f09\u3063\u3066\u3044\u3066\u3082\u3001\u9014\u4e2d\u306e\u7d4c\u8def\u3084\u5b9b\u5148\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u554f\u984c\u304c\u3042\u308c\u3070\u3001\u901a\u4fe1\u306f\u6210\u7acb\u3057\u307e\u305b\u3093\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001IPv6\u5074\u306b\u8a2d\u5b9a\u306e\u8aa4\u308a\u304c\u3042\u308a\u3001IPv4\u5074\u306f\u6b63\u5e38\u306a\u30b5\u30a4\u30c8\u3092\u8003\u3048\u307e\u3059\u3002IPv6\u3092\u5148\u306b\u8a66\u3057\u305f\u7aef\u672b\u304c\u300c\u8fd4\u4e8b\u304c\u6765\u306a\u3044\u300d\u3068\u3044\u3046\u7406\u7531\u3060\u3051\u3067\u9577\u304f\u5f85\u3064\u3068\u3001\u3059\u3067\u306b\u4f7f\u3048\u308bIPv4\u306e\u7d4c\u8def\u304c\u3042\u308b\u306e\u306b\u5229\u7528\u8005\u3092\u5f85\u305f\u305b\u307e\u3059\u3002Happy Eyeballs\u306f\u3001\u3053\u306e\u5f85\u3061\u65b9\u3092\u5909\u3048\u307e\u3059\u3002<\/p>\n<p>RFC 8305\u3067\u306f\u3001IPv6\u3092\u512a\u5148\u3059\u308b\u7aef\u672b\u3092\u57fa\u672c\u306e\u4f8b\u306b\u3057\u3064\u3064\u3001IPv4\u306e\u5019\u88dc\u3082\u4ea4\u305c\u3066\u63a5\u7d9a\u5148\u3092\u4e26\u3079\u307e\u3059\u3002\u4e00\u3064\u306e\u7a2e\u985e\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u5168\u90e8\u8a66\u3057\u3066\u304b\u3089\u3001\u3082\u3046\u4e00\u65b9\u3078\u79fb\u308b\u4e26\u3079\u65b9\u3092\u907f\u3051\u308b\u305f\u3081\u3067\u3059\u3002\u5019\u88dc\u304c\u591a\u3044\u5834\u5408\u3082\u3001\u6700\u521d\u306eIPv6\u3068IPv4\u306e\u4e00\u7d44\u3060\u3051\u3067\u7d42\u308f\u308b\u8003\u3048\u65b9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2>\u5c11\u3057\u9045\u308c\u3066\u59cb\u3081\u305f\u63a5\u7d9a\u304c\u5148\u306b\u901a\u308b\u3053\u3068\u3082\u3042\u308b<\/h2>\n<p>\u63a5\u7d9a\u8a66\u884c\u306f\u3001\u5168\u5019\u88dc\u306b\u4e00\u6589\u306b\u9001\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u958b\u59cb\u6642\u523b\u3092\u305a\u3089\u3057\u307e\u3059\u3002\u5f8c\u306e\u8a66\u884c\u3092\u59cb\u3081\u3066\u3082\u3001\u9032\u884c\u4e2d\u306e\u5148\u306e\u8a66\u884c\u306f\u3059\u3050\u306b\u306f\u53d6\u308a\u6d88\u3057\u307e\u305b\u3093\u3002\u3069\u308c\u304b\u4e00\u3064\u306e\u63a5\u7d9a\u304c\u6210\u7acb\u3057\u305f\u3068\u3053\u308d\u3067\u3001\u6b8b\u308b\u8a66\u884c\u3092\u3084\u3081\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306e\u8868\u306f\u3001\u305d\u306e\u9055\u3044\u3092\u8003\u3048\u308b\u305f\u3081\u306e\u4eee\u306e\u4f8b\u3067\u3059\u3002DNS\u3067\u4e21\u65b9\u306e\u5b9b\u5148\u304c\u3059\u3067\u306b\u5206\u304b\u3063\u3066\u304a\u308a\u3001\u6b21\u306e\u8a66\u884c\u307e\u3067250\u30df\u30ea\u79d2\u3001IPv4\u306e\u63a5\u7d9a\u6210\u7acb\u307e\u306740\u30df\u30ea\u79d2\u304b\u304b\u308b\u3068\u7f6e\u3044\u3066\u3044\u307e\u3059\u3002\u5b9f\u6e2c\u5024\u3084\u3001\u3059\u3079\u3066\u306e\u7aef\u672b\u306e\u52d5\u4f5c\u3092\u793a\u3059\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<figure style=\"overflow-x:auto;max-width:100%\" tabindex=\"0\" aria-label=\"\u63a5\u7d9a\u8a66\u884c\u306e\u4eee\u306e\u6642\u7cfb\u5217\u3002\u72ed\u3044\u753b\u9762\u3067\u306f\u6a2a\u306b\u79fb\u52d5\u3067\u304d\u307e\u3059\">\n<table style=\"min-width:620px;width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"padding:12px;border:1px solid #ddd\">\u7d4c\u904e\u6642\u9593<\/th>\n<th style=\"padding:12px;border:1px solid #ddd\">\u7aef\u672b\u306e\u52d5\u304d<\/th>\n<th style=\"padding:12px;border:1px solid #ddd\">\u3053\u3053\u3067\u5206\u304b\u308b\u3053\u3068<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:12px;border:1px solid #ddd\">0\u30df\u30ea\u79d2<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">IPv6\u5b9b\u3066\u306e\u63a5\u7d9a\u3092\u958b\u59cb<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">\u8fd4\u4e8b\u3092\u5f85\u3063\u3066\u3044\u308b\u6bb5\u968e\u3067\u306f\u3001\u6210\u5426\u306f\u672a\u78ba\u5b9a<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:12px;border:1px solid #ddd\">250\u30df\u30ea\u79d2<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">IPv4\u5b9b\u3066\u306e\u8a66\u884c\u3082\u958b\u59cb<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">IPv6\u306e\u5931\u6557\u304c\u78ba\u5b9a\u3059\u308b\u524d\u306b\u6b21\u3078\u9032\u3081\u308b<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:12px;border:1px solid #ddd\">290\u30df\u30ea\u79d2<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">IPv4\u306e\u63a5\u7d9a\u304c\u6210\u7acb<\/td>\n<td style=\"padding:12px;border:1px solid #ddd\">\u6210\u7acb\u3057\u305f\u63a5\u7d9a\u3092\u4f7f\u3044\u3001\u6b8b\u308b\u8a66\u884c\u3092\u7d42\u4e86<\/td>\n<\/tr>\n<\/tbody>\n<\/table><figcaption>RFC 8305\u306e\u63a5\u7d9a\u8a66\u884c\u306e\u8003\u3048\u65b9\u3092\u4f7f\u3063\u305f\u4eee\u306e\u6642\u7cfb\u5217\u3002\u6570\u5024\u4f8b\u30fb\u8868\u306fQuantum Sea\u306b\u3088\u308b\u4f5c\u6210\u3002<\/figcaption><\/figure>\n<p>\u3053\u306e\u4f8b\u3067\u77ed\u304f\u306a\u308b\u306e\u306f\u3001\u4f7f\u3048\u306a\u3044\u7d4c\u8def\u306e\u7d50\u679c\u3092\u5f85\u3063\u3066\u3044\u308b\u6642\u9593\u3067\u3059\u3002\u56de\u7dda\u305d\u306e\u3082\u306e\u306e\u901f\u5ea6\u304c\u4e0a\u304c\u3063\u305f\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e00\u65b9\u3001\u5148\u306e\u63a5\u7d9a\u304c\u6b21\u306e\u8a66\u884c\u3092\u59cb\u3081\u308b\u524d\u306b\u6210\u7acb\u3059\u308c\u3070\u3001\u4f59\u5206\u306a\u63a5\u7d9a\u8a66\u884c\u3092\u5897\u3084\u3055\u305a\u306b\u6e08\u307f\u307e\u3059\u3002\u958b\u59cb\u3092\u305a\u3089\u3059\u3053\u3068\u306b\u306f\u3001\u5f85\u3061\u6642\u9593\u3068\u901a\u4fe1\u8ca0\u8377\u306e\u4e21\u65b9\u3092\u8003\u3048\u308b\u610f\u5473\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>50\u30df\u30ea\u79d2\u3068250\u30df\u30ea\u79d2\u306f\u3001\u9055\u3046\u5834\u9762\u306e\u5f85\u3061\u6642\u9593<\/h2>\n<p>\u63a5\u7d9a\u524d\u306eDNS\u554f\u3044\u5408\u308f\u305b\u306b\u3082\u3001\u5fdc\u7b54\u306e\u9806\u756a\u3068\u3044\u3046\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002RFC\u306e\u63a8\u5968\u3067\u306f\u3001AAAA\u3068A\u306e\u554f\u3044\u5408\u308f\u305b\u3092\u307b\u307c\u7d9a\u3051\u3066\u9001\u308a\u3001\u4e21\u65b9\u306e\u56de\u7b54\u304c\u305d\u308d\u3046\u307e\u3067\u5fc5\u305a\u5f85\u3064\u3053\u3068\u306f\u907f\u3051\u307e\u3059\u3002AAAA\u306e\u6709\u52b9\u306a\u5fdc\u7b54\u304c\u5148\u306a\u3089\u3001IPv6\u306e\u63a5\u7d9a\u8a66\u884c\u3078\u9032\u3081\u307e\u3059\u3002<\/p>\n<p>A\u306e\u6709\u52b9\u306a\u5fdc\u7b54\u304c\u5148\u306b\u5c4a\u3044\u305f\u5834\u5408\u306f\u3001\u5c11\u3057\u5f8c\u306bAAAA\u306e\u5fdc\u7b54\u304c\u5c4a\u304f\u53ef\u80fd\u6027\u3092\u898b\u8fbc\u307f\u3001\u77ed\u304f\u5f85\u3061\u307e\u3059\u3002\u3053\u306e\u300cResolution Delay\u300d\u306e\u63a8\u5968\u5024\u304c50\u30df\u30ea\u79d2\u3067\u3059\u3002\u5f85\u3063\u3066\u3044\u308b\u9593\u306b\u6709\u52b9\u306aAAAA\u5fdc\u7b54\u304c\u6765\u308c\u3070IPv6\u3092\u8a66\u3057\u3001\u6642\u9593\u5185\u306b\u6765\u306a\u3051\u308c\u3070\u3001\u5f97\u3089\u308c\u305fIPv4\u306e\u5019\u88dc\u3067\u5148\u3078\u9032\u3081\u307e\u3059\u3002AAAA\u304c\u5b58\u5728\u3057\u306a\u3044\u3068\u3044\u3046\u6b63\u5e38\u306a\u5fdc\u7b54\u304c\u6765\u305f\u5834\u5408\u3082\u3001\u305d\u306e\u6642\u70b9\u3067\u9032\u3081\u307e\u3059\u3002<\/p>\n<p>\u3053\u308c\u306b\u5bfe\u3057\u3066250\u30df\u30ea\u79d2\u306f\u3001\u7d4c\u8def\u306e\u5f80\u5fa9\u6642\u9593\u306e\u5c65\u6b74\u304c\u306a\u3044\u5834\u5408\u306b\u3001\u6b21\u306e\u63a5\u7d9a\u8a66\u884c\u3092\u59cb\u3081\u308b\u307e\u3067\u306e\u300cConnection Attempt Delay\u300d\u306e\u63a8\u5968\u5024\u3067\u3059\u3002DNS\u306e\u56de\u7b54\u5f85\u3061\u3068\u306f\u958b\u59cb\u70b9\u3082\u5f79\u5272\u3082\u7570\u306a\u308a\u307e\u3059\u3002\u4e21\u65b9\u3092\u8db3\u3057\u305f\u6642\u9593\u304c\u3001\u5e38\u306b\u63a5\u7d9a\u5b8c\u4e86\u307e\u3067\u306e\u5f85\u3061\u6642\u9593\u306b\u306a\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5024\u3092\u77ed\u304f\u3059\u308b\u3068\u6b21\u306e\u5019\u88dc\u3092\u65e9\u304f\u8a66\u305b\u307e\u3059\u304c\u3001\u4e0d\u8981\u306a\u8a66\u884c\u3082\u5897\u3048\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002RFC\u81ea\u8eab\u3082\u3053\u308c\u3089\u3092\u8abf\u6574\u53ef\u80fd\u306a\u5024\u3068\u3057\u3066\u6271\u3063\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u5f85\u3061\u65b9\u3092\u8abf\u3079\u308b\u3068\u304d\u306f\u3001\u6570\u5024\u3060\u3051\u3092\u6bd4\u8f03\u3059\u308b\u3088\u308a\u3001\u3069\u306e\u6bb5\u968e\u304b\u3089\u6e2c\u3063\u305f\u5024\u304b\u3001\u7aef\u672b\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u4f55\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u304b\u3092\u305d\u308d\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30b5\u30a4\u30c8\u304c\u958b\u3051\u3066\u3082\u3001\u4e21\u65b9\u306e\u7d4c\u8def\u304c\u6b63\u5e38\u3068\u306f\u9650\u3089\u306a\u3044<\/h2>\n<p>Happy Eyeballs\u304c\u6271\u3046\u306e\u306f\u3001\u4e3b\u306b\u63a5\u7d9a\u306e\u958b\u59cb\u3067\u3059\u3002TCP\u306e\u63a5\u7d9a\u78ba\u8a8d\u304c\u901a\u3063\u305f\u5f8c\u3067\u3001\u5927\u304d\u306a\u30c7\u30fc\u30bf\u3092\u9001\u308c\u306a\u3044\u3001TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u306e\u78ba\u7acb\u306b\u5931\u6557\u3059\u308b\u3001HTTP\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u6b63\u3057\u304f\u5fdc\u7b54\u3057\u306a\u3044\u3001\u3068\u3044\u3063\u305f\u554f\u984c\u306f\u6b8b\u308a\u5f97\u307e\u3059\u3002\u5148\u306b\u6210\u7acb\u3057\u305f\u63a5\u7d9a\u304c\u3001\u305d\u306e\u5f8c\u3082\u6700\u3082\u901f\u3044\u3068\u3044\u3046\u4fdd\u8a3c\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5229\u7528\u8005\u306b\u306f\u30b5\u30a4\u30c8\u304c\u666e\u901a\u306b\u958b\u3051\u3066\u3044\u3066\u3082\u3001\u88cf\u3067\u306fIPv6\u306e\u5931\u6557\u3092IPv4\u304c\u88dc\u3063\u3066\u3044\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u904b\u7528\u5074\u304c\u753b\u9762\u306e\u8868\u793a\u6210\u529f\u3060\u3051\u3092\u898b\u3066\u3044\u308b\u3068\u3001\u7247\u5074\u306e\u554f\u984c\u3092\u898b\u843d\u3068\u3057\u304b\u306d\u307e\u305b\u3093\u3002IPv4\u3068IPv6\u3092\u5206\u3051\u305f\u5230\u9054\u6027\u306e\u78ba\u8a8d\u3084\u3001\u63a5\u7d9a\u958b\u59cb\u5f8c\u306e\u51e6\u7406\u3092\u542b\u3080\u76e3\u8996\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<p>\u300c\u5b9b\u5148\u3092\u8abf\u3079\u3089\u308c\u305f\u304b\u300d\u300c\u63a5\u7d9a\u3067\u304d\u305f\u304b\u300d\u300c\u305d\u306e\u5f8c\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u52d5\u3044\u305f\u304b\u300d\u3092\u5206\u3051\u308b\u3068\u3001\u3053\u306e\u4ed5\u7d44\u307f\u304c\u52a9\u3051\u308b\u7bc4\u56f2\u3082\u898b\u3048\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002Happy Eyeballs v2\u306f\u3001\u4f7f\u3048\u308b\u5019\u88dc\u3078\u65e9\u3081\u306b\u9032\u3081\u308b\u3088\u3046\u306b\u3059\u308b\u63a5\u7d9a\u306e\u5de5\u592b\u3067\u3059\u3002RFC 8305\u306f2017\u5e7412\u6708\u767a\u884c\u3067\u3001\u78ba\u8a8d\u6642\u306eRFC Editor\u306e\u533a\u5206\u306fProposed Standard\u3067\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.rfc-editor.org\/rfc\/rfc8305.html\">RFC 8305 \u2014 Happy Eyeballs Version 2: Better Connectivity Using Concurrency<\/a>\uff082017\u5e7412\u6708\u3001\u00a72\u301c5\u30fb8\u301c9\uff09<\/li>\n<li><a href=\"https:\/\/www.rfc-editor.org\/info\/rfc8305\/\">RFC Editor\uff1aRFC 8305\u306e\u72b6\u614b\u3068\u95a2\u9023\u60c5\u5831<\/a>\uff082026\u5e7410\u670826\u65e5\u78ba\u8a8d\uff09<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Web\u30b5\u30a4\u30c8\u3092\u958b\u304f\u3068\u304d\u3001\u540c\u3058\u540d\u524d\u304b\u3089\u8907\u6570\u306e\u63a5\u7d9a\u5148\u304c\u898b\u3064\u304b\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002IPv6\u3068IPv4\u306e\u4e21\u65b9\u306e\u30a2\u30c9\u30ec\u30b9\u304c\u5206\u304b\u3063\u3066\u3044\u3066\u3082\u3001\u4e21\u65b9\u306e\u7d4c\u8def\u304c\u6b63\u5e38\u306b\u4f7f\u3048\u308b\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002\u6700\u521d\u306b\u9078\u3093\u3060\u5b9b\u5148\u304b\u3089\u8fd4\u4e8b\u304c\u6765\u306a\u3044\u3068\u304d\u3001\u305d\u306e\u5931\u6557\u304c\u78ba\u5b9a\u3059 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1716,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[29],"tags":[257,283],"class_list":["post-1717","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-communications-networking","tag-dns","tag-tcp"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-happy-eyeballs-v2-connection-delay-featured-56015638b7ce.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1717"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1717\/revisions"}],"predecessor-version":[{"id":1718,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1717\/revisions\/1718"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1716"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}