目前树莓派和 Windows 电脑都是有线直连光猫，但是树莓派却无法使用 IPv6 访问互联网，很奇怪。 开始以为光猫有问题，但尝试过用 WIFI 连接路由器，同样是手机正常用 IPv6 ，但是树莓派不行。 在此请教各位大佬，看看有没有解决办法。
Windows
Windows 电脑能正常获取到 IPv6 ，也能正常访问：
以太网适配器 以太网: 连接特定的 DNS 后缀 . . . . . . . : IPv6 地址 . . . . . . . . . . . . : 240e:1b1:18b1:4020:3fdf:b377:98ca:a6c0 临时 IPv6 地址. . . . . . . . . . : 240e:1b1:18b1:4020:2c01:2dbb:7438:2b7 本地链接 IPv6 地址. . . . . . . . : fe80::104f:45c6:f783:f13d%9 IPv4 地址 . . . . . . . . . . . . : 192.168.1.5 子网掩码 . . . . . . . . . . . . : 255.255.255.0 默认网关. . . . . . . . . . . . . : fe80::1%9 192.168.1.1 请求外网
# curl --ipv6 --max-time 30 -v ip.sb * Host ip.sb:80 was resolved. * IPv6: 2606:4700:20::ac43:4bac, 2606:4700:20::681a:d1f, 2606:4700:20::681a:c1f * IPv4: (none) * Trying [2606:4700:20::ac43:4bac]:80... * Connected to ip.sb (2606:4700:20::ac43:4bac) port 80 > GET / HTTP/1.1 > Host: ip.sb > User-Agent: curl/8.9.1 > Accept: */* > * Request completely sent off < HTTP/1.1 200 OK < Date: Wed, 06 Nov 2024 03:40:46 GMT < Content-Type: text/plain < Transfer-Encoding: chunked < Connection: keep-alive < Vary: Accept-Encoding < Cache-Control: no-cache < cf-cache-status: DYNAMIC < Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=%2BsybXgwsYFeIchZ3GiiiubR5WrfhpNwP8BeFKiJcKvcvnPpA2Z9O2zSmKXO8hv0qdqcCdz8cIiTyk7oqatr7igul%2FYDOHlBArq6yozFKBNSgKBUHOAMMg9DtL1gPjSitVu8T"}],"group":"cf-nel","max_age":604800} < NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800} < Server: cloudflare < CF-RAY: 8de21062ff115986-IAD < alt-svc: h3=":443"; ma=86400 < server-timing: cfL4;desc="?proto=TCP&rtt=240531&sent=1&recv=3&lost=0&retrans=0&sent_bytes=0&recv_bytes=68&delivery_rate=0&cwnd=250&unsent_bytes=0&cid=0000000000000000&ts=0&x=0" < 240e:1b1:18b1:4020:2c01:2dbb:7438:2b7 树莓派
有获取到公网 IPv6 ，局域网内能通，就是访问不了外网。
$ nmcli device show GENERAL.DEVICE: eth0 GENERAL.TYPE: ethernet GENERAL.HWADDR: DC:A6:32:87:E2:A7 GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: Wired connection 1 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2 WIRED-PROPERTIES.CARRIER: on IP4.ADDRESS[1]: 192.168.1.2/24 IP4.GATEWAY: 192.168.1.1 IP4.ROUTE[1]: dst = 192.168.1.0/24, nh = 0.0.0.0, mt = 100 IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 192.168.1.1, mt = 100 IP4.DNS[1]: 192.168.1.1 IP4.WINS[1]: 192.168.1.1 IP6.ADDRESS[1]: 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432/64 IP6.ADDRESS[2]: fe80::5b26:3a6e:e716:e310/64 IP6.GATEWAY: fe80::1 IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 1024 IP6.ROUTE[2]: dst = 240e:1b1:18b1:4020::/64, nh = ::, mt = 100 IP6.ROUTE[3]: dst = ::/0, nh = fe80::1, mt = 100 IP6.DNS[1]: fe80::1 GENERAL.DEVICE: lo GENERAL.TYPE: loopback GENERAL.HWADDR: 00:00:00:00:00:00 GENERAL.MTU: 65536 GENERAL.STATE: 100 (connected (externally)) GENERAL.CONNECTION: lo GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/1 IP4.ADDRESS[1]: 127.0.0.1/8 IP4.GATEWAY: -- IP6.ADDRESS[1]: ::1/128 IP6.GATEWAY: -- GENERAL.DEVICE: wlan0 GENERAL.TYPE: wifi GENERAL.HWADDR: DC:A6:32:87:E1:A7 GENERAL.MTU: 1500 GENERAL.STATE: 30 (disconnected) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- IP4.GATEWAY: -- IP6.GATEWAY: -- GENERAL.DEVICE: p2p-dev-wlan0 GENERAL.TYPE: wifi-p2p GENERAL.HWADDR: (unknown) GENERAL.MTU: 0 GENERAL.STATE: 30 (disconnected) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- 访问外网：
$ curl --ipv6 --max-time 30 -v ip.sb * Trying [2606:4700:20::681a:c1f]:80... * ipv6 connect timeout after 14918ms, move on! * Trying [2606:4700:20::681a:d1f]:80... * ipv6 connect timeout after 7459ms, move on! * Trying [2606:4700:20::ac43:4bac]:80... * Connection timed out after 30000 milliseconds * Closing connection 0 curl: (28) Connection timed out after 30000 milliseconds
路由设置：
$ ip -6 route 240e:1b1:18b1:4020::/64 dev eth0 proto ra metric 100 pref medium fe80::/64 dev eth0 proto kernel metric 1024 pref medium default via fe80::1 dev eth0 proto ra metric 100 pref medium Ping Windows 设备：
$ ping 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432 PING 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432(240e:1b1:18b1:4020:a8f9:a6e4:338a:c432) 56 data bytes 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=1 ttl=64 time=0.137 ms 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=2 ttl=64 time=0.059 ms 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=3 ttl=64 time=0.062 ms 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=4 ttl=64 time=0.057 ms 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=5 ttl=64 time=0.064 ms 64 bytes from 240e:1b1:18b1:4020:a8f9:a6e4:338a:c432: icmp_seq=6 ttl=64 time=0.074 ms 
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