{"id":3991,"date":"2013-12-07T20:04:53","date_gmt":"2013-12-07T12:04:53","guid":{"rendered":"https:\/\/www.icocean.com\/wp\/?p=3991"},"modified":"2013-12-07T20:04:53","modified_gmt":"2013-12-07T12:04:53","slug":"ipv6%e7%9f%a5%e8%af%86%ef%bc%9a%e7%94%b1mac%e5%9c%b0%e5%9d%80%e8%ae%a1%e7%ae%97%e5%87%ba%e6%9c%ac%e5%9c%b0%e9%93%be%e8%b7%af%e5%9c%b0%e5%9d%80link-local","status":"publish","type":"post","link":"https:\/\/www.icocean.com\/blog\/?p=3991","title":{"rendered":"ipv6\u77e5\u8bc6\uff1a\u7531MAC\u5730\u5740\u8ba1\u7b97\u51fa\u672c\u5730\u94fe\u8def\u5730\u5740link-local"},"content":{"rendered":"

The IPv6 Link-local address is derived form the MAC- or Ethernet hardware address in the following way;<\/p>\n

 <\/p>\n\n\n\n\n
Mac address:<\/b><\/td>\nXX:XX:XX:XX:XX:XX<\/td>\n<\/tr>\n
IPv6 Link local address:<\/b><\/td>\nfe80::xyxx:xxff:fexx:xxxx<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Where y = X XOR 2. Furthermore ‘ff:fe’ is inserted and ‘fe80::’ prepended.<\/p>\n

‘y = X XOR 2’ means inverting the 2nd<\/sup>\u00a0bit from the right;<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
X bin<\/th>\nX Hex<\/th>\ny bin<\/th>\ny Hex<\/th>\n<\/tr>\n
0000<\/td>\n0<\/td>\n0010<\/td>\n2<\/td>\n<\/tr>\n
0001<\/td>\n1<\/td>\n0011<\/td>\n3<\/td>\n<\/tr>\n
0010<\/td>\n2<\/td>\n0000<\/td>\n0<\/td>\n<\/tr>\n
0011<\/td>\n3<\/td>\n0001<\/td>\n1<\/td>\n<\/tr>\n
0100<\/td>\n4<\/td>\n0110<\/td>\n6<\/td>\n<\/tr>\n
0101<\/td>\n5<\/td>\n0111<\/td>\n7<\/td>\n<\/tr>\n
0110<\/td>\n6<\/td>\n0100<\/td>\n4<\/td>\n<\/tr>\n
0111<\/td>\n7<\/td>\n0101<\/td>\n5<\/td>\n<\/tr>\n
1000<\/td>\n8<\/td>\n1010<\/td>\na<\/td>\n<\/tr>\n
1001<\/td>\n9<\/td>\n1011<\/td>\nb<\/td>\n<\/tr>\n
1010<\/td>\nA<\/td>\n1000<\/td>\n8<\/td>\n<\/tr>\n
1011<\/td>\nB<\/td>\n1001<\/td>\n9<\/td>\n<\/tr>\n
1100<\/td>\nC<\/td>\n1110<\/td>\ne<\/td>\n<\/tr>\n
1101<\/td>\nD<\/td>\n1111<\/td>\nf<\/td>\n<\/tr>\n
1110<\/td>\nE<\/td>\n1100<\/td>\nc<\/td>\n<\/tr>\n
1111<\/td>\nF<\/td>\n1101<\/td>\nd<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

The IPv6 Link-local address is derived form the MAC- or […]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[212,3901,3902,3900],"class_list":["post-3991","post","type-post","status-publish","format-standard","hentry","category-ipv6","tag-ipv6","tag-link-local","tag-mac","tag-3900","category-37-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3991"}],"version-history":[{"count":1,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3991\/revisions"}],"predecessor-version":[{"id":3992,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/3991\/revisions\/3992"}],"wp:attachment":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}