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IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹æž¯æ¸‡ã®ä¸ã§æœ€å¾Œã®ãƒ•ãƒãƒ³ãƒ†ã‚£ã‚¢ã€Œã‚¯ãƒ©ã‚¹Eã®240.0.0.0/4ã€ã‚’å†åˆ©ç”¨ã™ã‚‹ã“ã¨ã¯ã§ãã‚‹ã®ã‹ï¼Ÿ
æž¯æ¸‡ã—ã¦ã„ã‚‹IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã«ã¤ã„ã¦ã€ä¸€éƒ¨ã®çŠ¶æ³ã§ã¯æ¨™æº–åŒ–ã®å®™ã¶ã‚‰ã‚Šã‚“çŠ¶æ…‹ã«ã‚ã‚‹ã€Œã‚¯ãƒ©ã‚¹Eç©ºé–“ã€ã‚’æ´»ç”¨ã§ãã‚‹ã¨ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚¨ãƒ³ã‚¸ãƒ‹ã‚¢ã®ãƒ™ãƒ³ãƒ»ã‚³ãƒƒã‚¯ã‚¹æ°ãŒãƒ–ãƒã‚°ã«æŠ•ç¨¿ã—ã¾ã—ãŸã€‚ Reclaiming IPv4 Class E's 240.0.0.0/4 https://blog.benjojo.co.uk/post/class-e-addresses-in-the-real-world IPã‚¢ãƒ‰ãƒ¬ã‚¹ã¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã§é€šä¿¡ã‚’è¡Œã†éš›ã«ç›¸æ‰‹ã‚’ç‰¹å®šã™ã‚‹ã®ã«ä½¿ç”¨ã•ã‚Œã¦ã„ã¾ã™ã€‚IPv4ã®ã‚¢ãƒ‰ãƒ¬ã‚¹ç©ºé–“ã¯32ãƒ“ãƒƒãƒˆã§ã‚ã‚Šã€å…¨éƒ¨ã§ç´„43å„„å€‹ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ã—ã‹æŒ¯ã‚Šåˆ†ã‘ã‚‹ã“ã¨ãŒã§ããªã„ãŸã‚ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆäººå£ã®å¢—åŠ ã¨ã¨ã‚‚ã«æ–°è¦ã«æŒ¯ã‚Šåˆ†ã‘ã‚‹IPã‚¢ãƒ‰ãƒ¬ã‚¹ãŒæž¯æ¸‡ã—ã¦ã„ãå•é¡ŒãŒç™ºç”Ÿã—ã¦ã„ã¾ã™ã€‚ æ–°ãŸãªIPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã®ä¾›çµ¦ãŒæž¯æ¸‡ã—ã¦ä»¥é™IPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã®ä¾¡æ ¼ã¯ä¸Šæ˜‡ã—ã¦ãŠã‚Šã€AWSãªã©ã®ã‚¯ãƒ©ã‚¦ãƒ‰ã‚µãƒ¼ãƒ“ã‚¹ã§ã¯ä»¥å‰ã¯ç„¡æ–™ã ã£ãŸ
pmakino 2024/06/03
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DS-Lite ã«ã‚ˆã‚‹æ¥½å¤©ã²ã‹ã‚Šã® IPv4 over IPv6 ã‚’ NVR500 ã§åˆ©ç”¨ã™ã‚‹ - [ã´](2020-09-13)
_ [Internet] DS-Lite ã«ã‚ˆã‚‹æ¥½å¤©ã²ã‹ã‚Šã® IPv4 over IPv6 ã‚’ NVR500 ã§åˆ©ç”¨ã™ã‚‹ YAMAHA NVR500 ã¯ DS-Lite æŽ¥ç¶šã«å¯¾å¿œã—ã¦ã„ã‚‹ã¨ã®æƒ…å ±ã¯ã‚ã‚‹ãŒã€å®Ÿä¾‹ã¯ transix ã®ã‚‚ã®ã°ã‹ã‚Šã§æ¥½å¤©ã²ã‹ã‚Šã®ã‚¯ãƒã‚¹ãƒ‘ã‚¹ (dgw.xpass.jp) ã§ã®å®Ÿä¾‹æƒ…å ±ãŒãªã‹ãªã‹è¦‹å½“ãŸã‚‰ãªã„ã€‚ ãã“ã§å®Ÿæ©Ÿã§è©¦ã—ãŸã¨ã“ã‚ã€å•é¡ŒãªãæŽ¥ç¶šã§ããŸã®ã§ãƒ¡ãƒ¢ã—ã¦ãŠãã€‚ IPoE ã«ã‚ˆã‚‹ IPv6 æŽ¥ç¶šè¨å®šãŒæ—¢ã«å®Œäº†ã—ã¦ã„ã‚‹çŠ¶æ…‹ã§ã€ä»¥ä¸‹ã®ã‚³ãƒžãƒ³ãƒ‰è¿½åŠ æŠ•å…¥ã§ç„¡äº‹æˆåŠŸã€‚ tunnel select 1 tunnel encapsulation ipip tunnel endpoint address 2001:f60:0:200::1:1 ip tunnel mtu 1460 ip tunnel tcp mss limit auto tunnel enable 1 i
pmakino 2020/09/13
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How NAT traversal works
WireGuard is a registered trademark of Jason A. Donenfeld. We covered a lot of ground in our post about How Tailscale Works. However, we glossed over how we can get through NATs (Network Address Translators) and connect your devices directly to each other, no matter whatâ€™s standing between them. Letâ€™s talk about that now! Letâ€™s start with a simple probl em: establishing a peer-to-peer connection be
pmakino 2020/09/05
rebuild.fm 280 ã‹ã‚‰

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DS-Liteã®ä»•çµ„ã¿:Geekãªãºãƒ¼ã˜
DS-Liteã¯ã€åŸºå¹¹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’IPv6ã§æ§‹ç¯‰ã—ã€ãƒ¦ãƒ¼ã‚¶ã®ãƒãƒ¼ã‚«ãƒ«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã¨IPv4ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚’ã¤ãªãã“ã¨ãŒã§ãã‚‹æŠ€è¡“ã§ã™ã€‚ åŸºå¹¹ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’IPv6ã ã‘ã§æ§‹ç¯‰ã—ã¤ã¤ã€ãƒ¦ãƒ¼ã‚¶ã«å¯¾ã—ã¦ã¯IPv4ã‚µãƒ¼ãƒ“ã‚¹ã‚‚æä¾›ã§ãã¾ã™ã€‚ DS-Liteã¨ã„ã†åå‰ã¯ã€Dual-Stack Liteã®ç•¥ã§ã™ã€‚ åå‰ã®æ„å›³ã¨ã—ã¦ã¯ã€IPv6ã¨IPv4ã®ãƒ‡ãƒ¥ã‚¢ãƒ«ã‚¹ã‚¿ãƒƒã‚¯ã‚’è»½é‡ã«å®Ÿç¾ã§ãã‚‹æŠ€è¡“ã§ã‚ã‚‹ã€ã¨ã„ã†ã‚‚ã®ã§ã™ã€‚ ã“ã®è»½é‡ã¯ã€ISPå´ã«ã‚ˆã‚‹IPv4ã§ã®CGN(Carrier Grade NAT)ã¨æ¯”ã¹ã¦è»½é‡ã¨ã„ã†æ„å›³ãŒã‚ã‚Šã¾ã™ã€‚ CGNã«ã‚ˆã‚‹NATã§ã¯ã€ãƒ¦ãƒ¼ã‚¶ã«ã‚ˆã‚‹ãƒ—ãƒ©ã‚¤ãƒ™ãƒ¼ãƒˆIPv4ã‚¢ãƒ‰ãƒ¬ã‚¹ã§ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã€ISPã§ã®CGNé…ä¸‹ã®IPv4ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã€IPv4ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã¨ã„ã†3ç¨®é¡žã®IPv4ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«ã‚ˆã‚‹é€šä¿¡ã«ãªã‚‹ãŸã‚ã€NAT444ã¨å‘¼ã°ã‚Œã‚‹ã“ã¨ã‚‚ã‚ã‚Šã¾ã™ã€‚ CGNã«ã‚ˆã‚‹NAT444ã§ã¯ã€ãƒ¦
pmakino 2019/07/29
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æ–°ã—ã„Webã®åŒæ–¹å‘é€šä¿¡ "WebTransport" ã«ã¤ã„ã¦ - ASnoKaze blog
é–¢é€£è¨˜äº‹ WebTransport over QUICã®ã‚µãƒ³ãƒ—ãƒ«ã‚µãƒ¼ãƒã‚’è©¦ã—ã¦ã¿ã‚‹ - ASnoKaze blog WebTransport over HTTP/2 ã®ä»•æ§˜ã«ã¤ã„ã¦ - ASnoKaze blog WebTransport over QUIC ã«ã¤ã„ã¦ - ASnoKaze blog WebTransportã¨ã„ã†æ–°ã—ã„åŒæ–¹å‘é€šä¿¡ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã®è°è«–ãŒå§‹ã¾ã£ã¦ã„ã‚‹ã€‚ Googleã®Peter Thatcheræ°ã‚‰ã«ã‚ˆã£ã¦ã€W3C WICGã«ãƒ—ãƒãƒãƒ¼ã‚¶ãƒ«ãŒæŠ•ã’ã‚‰ã‚Œã¦ã„ã¾ã™ã€‚ discourse.wicg.io WebTransportã¯ã€WebSocketã®ã‚ˆã†ãªAPIã‚’ã‚‚ã¡ã€QUICã‚„HTTP/3ä¸Šã§å¤šé‡åŒ–ã•ã‚ŒãŸã‚¹ãƒˆãƒªãƒ¼ãƒ ã‚’åˆ©ç”¨ã—ã€ãƒ˜ãƒƒãƒ‰ã‚ªãƒ–ãƒ©ã‚¤ãƒ³ãƒ–ãƒãƒƒã‚¯ã®ãªã„é€šä¿¡ã‚’è¡Œãˆã‚‹ã‚ˆã†ã«ã™ã‚‹ã¨ã„ã†ã®ãŒãƒ¢ãƒãƒ™ãƒ¼ã‚·ãƒ§ãƒ³ã®ã‚ˆã†ã§ã™ã€‚ï¼ˆå®Ÿéš›ã«ä½¿ç”¨ã™ã‚‹"ãƒˆãƒ©ãƒ³ã‚¹ãƒãƒ¼ãƒˆ"ã¯ãƒ—ãƒ©ã‚¬ãƒ–ãƒ«ãªè¨è¨ˆã«ãª
pmakino 2019/05/06
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QUICã¨HTTP/3æ™‚ä»£ã®ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆè§£èª¬æ›¸ã¯ã©ã†ã‚ã‚‹ã¹ãã ã‚ã† - golden-luckyã®æ—¥è¨˜
OSIå‚ç…§ãƒ¢ãƒ‡ãƒ«ã¨TCP/IPãƒ¢ãƒ‡ãƒ« ãªãœã„ã¾ã§ã‚‚OSIå‚ç…§ãƒ¢ãƒ‡ãƒ«ã«ã‚ˆã‚‹èª¬æ˜ŽãŒå¤šã„ã‹ QUICã¯ã€TCP/IPãƒ¢ãƒ‡ãƒ«ã®ãƒˆãƒ©ãƒ³ã‚¹ãƒãƒ¼ãƒˆã¨ã¯ã„ãˆã‚‹ãŒã€OSIå‚ç…§ãƒ¢ãƒ‡ãƒ«ã®ãƒ¬ã‚¤ãƒ¤4ã¨ã¯ã„ã„ã«ãã„ HTTP/QUICãƒ¢ãƒ‡ãƒ« QUICã‚’ã©ã†è§£èª¬ã™ã‚‹ã‹ OSIå‚ç…§ãƒ¢ãƒ‡ãƒ«ã¨TCP/IPãƒ¢ãƒ‡ãƒ« ã‹ã¤ã¦ã¼ããŸã¡ã¯ã€7ã¤ã®ãƒ¬ã‚¤ãƒ¤ã«åˆ†ã‹ã‚ŒãŸOSIå‚ç…§ãƒ¢ãƒ‡ãƒ«ã¨ã„ã†å§¿ã§ã‚³ãƒ³ãƒ”ãƒ¥ãƒ¼ã‚¿ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã‚’å¦ã³ã€ãã®7å±¤ã®ãƒ¢ãƒ‡ãƒ«ã«ãã£ã¦å„ç¨®ã®ãƒ—ãƒãƒˆã‚³ãƒ«ã‚’ç†è§£ã—ã‚ˆã†ã¨ã—ã¦ã„ã¾ã—ãŸã€‚ ã ã‹ã‚‰ã€ã€ŒSONET/SDHä¸Šã®ATMå›žç·šã§IPãƒ‘ã‚±ãƒƒãƒˆã‚’ã‚„ã‚Šå–ã‚Šã™ã‚‹ã€ã¨ã„ã†æ§‹æƒ³ã‚’ãã‘ã°ã€ã€Œã¤ã¾ã‚Šã€SONET/SDHãŒãƒ¬ã‚¤ãƒ¤1ã§ã€ATMãŒãƒ¬ã‚¤ãƒ¤2ã§ã€IPãŒãƒ¬ã‚¤ãƒ¤3ãªã®ã ãªã€ã¨ã„ã†æž çµ„ã¿ã‚’é ã«æã„ã¦ã„ã¾ã—ãŸã€‚ ã¨åŒæ™‚ã«ã€OSIã®ãƒ¬ã‚¤ãƒ¤ã¨ã¯ã„ã£ãŸã„â€¦â€¦ã€ã¨ã„ã†ã‚¢ãƒ³ãƒ“ãƒãƒ¬ãƒ³ãƒˆãªæƒ³ã„ã«ã•ã„ãªã¾ã‚Œã‚‹ã“ã¨ã‚‚ã‚ˆãã‚ã‚Šã¾ã—ãŸã€‚ ã€ŒSONET/SDHãŒãƒ¬ã‚¤ãƒ¤1ã£ã¦
pmakino 2019/02/02
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2019å¹´ã«ç™»å ´ã™ã‚‹HTTP/3ã®ç›®çŽ‰ã€ã“ã‚Œã¾ã§ã¨ã®é•ã„
Webã‚¢ã‚¯ã‚»ã‚¹ã®æ–°ã—ã„é€šä¿¡ãƒ—ãƒãƒˆã‚³ãƒ«ã€ŒHTTP/3ã€ãŒç™»å ´ã—ãŸã€‚å¾“æ¥ã®HTTPã‚ˆã‚Šã‚‚Webã‚¢ã‚¯ã‚»ã‚¹ã‚’åŠ‡çš„ã«åŠ¹çŽ‡åŒ–ã™ã‚‹ã€‚HTTP/3ãŒç™»å ´ã—ãŸèƒŒæ™¯ã‚„ãã®ä»•çµ„ã¿ã‚’è§£èª¬ã™ã‚‹ã€‚ HTTPï¼ˆHyperText Transfer Protocolï¼‰ã¯Webã®ä¸–ç•Œã‚’æ”¯ãˆã‚‹ãƒ—ãƒãƒˆã‚³ãƒ«ã§ã‚ã‚‹ã€‚Webãƒšãƒ¼ã‚¸ã®å†…å®¹ã‚’è¨˜è¿°ã™ã‚‹HTMLãƒ•ã‚¡ã‚¤ãƒ«ã€ãƒ¬ã‚¤ã‚¢ã‚¦ãƒˆã‚’æ±ºå®šã™ã‚‹CSSãƒ•ã‚¡ã‚¤ãƒ«ãªã©ã€Webã‚µã‚¤ãƒˆã‚’æ§‹æˆã™ã‚‹è¦ç´ ã¯HTTPã‚’ä½¿ã£ã¦Webã‚µãƒ¼ãƒãƒ¼ã‹ã‚‰Webãƒ–ãƒ©ã‚¦ã‚¶ãƒ¼ã«é€ã‚‰ã‚Œã‚‹ã€‚ HTTPã®æœ€åˆã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã‚ã‚‹HTTP/1.0ãŒç™»å ´ã—ãŸã®ã¯1996å¹´ã€‚ ç¿Œå¹´ã®1997å¹´ã«ã¯ã€ãƒãƒ¼ãƒãƒ£ãƒ«ãƒ›ã‚¹ãƒˆã«å¯¾å¿œã™ã‚‹ãªã©ã®æ”¹è‰¯ã‚’åŠ ãˆãŸHTTP/1.1ãŒç™»å ´ã—ãŸã€‚ãƒãƒ¼ãƒãƒ£ãƒ«ãƒ›ã‚¹ãƒˆã¯ã€åŒã˜IPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’è¤‡æ•°ã®ãƒ‰ãƒ¡ã‚¤ãƒ³ã§å…±æœ‰ã™ã‚‹æŠ€è¡“ã ã€‚ç¾åœ¨ã®Webã‚µã‚¤ãƒˆã¸ã®ã‚¢ã‚¯ã‚»ã‚¹ã«ã¯HTTP/1.1ãŒåºƒãä½¿ã‚ã‚Œã¦ã„ã‚‹ã€‚ HTTPã®æ¬¡ã®ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã§ã‚ã‚‹HT
pmakino 2019/01/28
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RHEL6: ifconfig is obsolete!
å‰å›žã‚¨ãƒ³ãƒˆãƒªã§ã€expand_config ã‚’è¦‹ã¦æ°—ä»˜ã„ãŸã“ã¨ãŒã‚ã‚‹ã€‚ piyolian: RHEL6: PREFIX overrides NETMASK in `ifcfg-*' RHEL6 ã§ã¯ã€ã‚¤ãƒ³ã‚¿ãƒ¼ãƒ•ã‚§ã‚¤ã‚¹ã«è¤‡æ•°ã® IP ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’è¨å®šã§ãã‚‹ã‚‰ã—ã„ã€‚ãã†ã„ãˆã° OS ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«æ™‚ã®ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯è¨å®šç”»é¢ã§ã¯ã€è¤‡æ•° IP ã‚¢ãƒ‰ãƒ¬ã‚¹ãŒç™»éŒ²ã§ããã†ãª UI ã«ãªã£ã¦ã„ãŸã€‚ä»Šã¾ã§è©¦ã—ãŸã“ã¨ã¯ãªã‹ã£ãŸãŒã€å®Ÿéš›ã«ãã“ã§è¤‡æ•° IP ã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’è¨å®šã—ã¦ã¿ã‚‹ã¨ã€ifcfg-* ã¯æ¬¡ã®ã‚ˆã†ã«ãªã‚‹ã€‚ RHEL6.4: /etc/sysconfig/network-scripts/ifcfg-eth0: DEVICE=eth0 TYPE=Ethernet UUID=7f36ffb3-0b2a-48d5-9e81-18b685396f06 ONBOOT=yes NM_CONTROLLED=yes BOOT
pmakino 2013/07/14
ã€ŒRHEL6â€¦è¤‡æ•°ã®IPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’è¨å®šã§ãã‚‹â€¦(eth0:1ã¨ã‹)å¿…è¦ãªã„ã€ã€Œæœ‰åŠ¹ãªIPã‚¢ãƒ‰ãƒ¬ã‚¹ã‚’çŸ¥ã‚‹æ‰‹æ®µâ€¦ifconfigã¯ãã®å½¹ã«ã¯ç«‹ãŸãªã„â€¦ã“ã‚Œã‹ã‚‰ã¯ip addrã‚’ä½¿ãˆã€

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Windows Vistaã§DHCPã‚µãƒ¼ãƒã‹ã‚‰IPã‚¢ãƒ‰ãƒ¬ã‚¹ãŒå–å¾—ã§ããªã„ä¸å…·åˆã‚’è§£æ¶ˆã™ã‚‹ ï¼ ï¼ IT
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pmakino 2012/10/19
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iPhone (Softbank) å›žç·šã®å¿œç”æ¯”è¼ƒ (TCP ã¨ ICMP Echo) - Kenichi Maehashi's Blog
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