DNS 2001:da8::666

[gaoyifan]

与TUNA联合搭建一台具有AnyCast特性的IPv6 DNS递归解析服务器。

备忘列表：

• AS23910物理线路接入VLAN95
• 初始化虚拟机（dns666.s.ustclug.org）
• 配置DNS转发服务
• 配置BFD
• 添加VDP

转发侧信息：

• IP 2001:da8:ff:308::2/64
• 网关 2001:da8:ff:308::1/64
• Anycast IP 2001:da8::666

[gaoyifan]

anycast已接通

[zhsj]

为什么最近路由掉了？

[yangzhaofeng]

目前看來，anycast掉了的原因是 2001:da8:ff:308::2 所在的網絡沒有切換到新網絡

附上從合肥到兩台666服務器的trace結果

traceroute to 2001:da8:ff:308::2 (2001:da8:ff:308::2), 30 hops max, 80 byte packets
1 ustc.edu.cn (2001:da8:d800:5f52:180:1:0:1) 2.313 ms 2.277 ms 2.250 ms
2 2001:da8:d800:95::1 (2001:da8:d800:95::1) 4.554 ms 3.423 ms 3.792 ms
3 2001:da8:b3:101::2 (2001:da8:b3:101::2) 3.161 ms 3.261 ms 3.385 ms
4 2001:da8:1:514::2 (2001:da8:1:514::2) 3.147 ms 3.414 ms 3.600 ms
5 2001:da8:1:514::1 (2001:da8:1:514::1) 3.259 ms 3.404 ms 3.570 ms
6 2001:da8:2:e::1 (2001:da8:2:e::1) 10.479 ms 8.643 ms 8.633 ms
7 2001:da8:2:d::2 (2001:da8:2:d::2) 16.786 ms 16.894 ms 16.850 ms
8 2001:da8:2:1::1 (2001:da8:2:1::1) 26.771 ms 26.817 ms 26.883 ms
9 2001:da8:2:40::2 (2001:da8:2:40::2) 93.923 ms 2001:da8:2:3f::2 (2001:da8:2:3f::2) 93.878 ms 93.860 ms
10 tjn-bj-v6.cernet2.net (2001:da8:1:16::2) 28.493 ms 28.532 ms 28.577 ms
11 jnn-tjn-v6.cernet2.net (2001:da8:1:15::2) 33.389 ms 33.326 ms 33.326 ms
12 hefei-core-h-pos-01-v6.cernet2.net (2001:da8:1:24::2) 43.626 ms 43.561 ms 43.555 ms
13 cernet2.net (2001:da8:ff:308::2) 44.399 ms 44.233 ms 44.154 ms

traceroute to 2001:da8::666 (2001:da8::666), 30 hops max, 80 byte packets
1 ustc.edu.cn (2001:da8:d800:5f52:180:1:0:1) 1.346 ms 1.298 ms 1.324 ms
2 2001:da8:d800:95::1 (2001:da8:d800:95::1) 4.424 ms 4.446 ms 4.420 ms
3 2001:da8:b3:101::2 (2001:da8:b3:101::2) 2.475 ms 2.447 ms 2.420 ms
4 2001:da8:1:514::2 (2001:da8:1:514::2) 2.264 ms 2.491 ms 2.728 ms
5 2001:da8:1:514::1 (2001:da8:1:514::1) 2.394 ms 2.547 ms 2.546 ms
6 2001:da8:2:e::1 (2001:da8:2:e::1) 9.453 ms 9.267 ms 9.328 ms
7 2001:da8:2:d::2 (2001:da8:2:d::2) 17.690 ms 17.560 ms 17.651 ms
8 2001:da8:2:1::1 (2001:da8:2:1::1) 42.382 ms 42.393 ms 42.364 ms
9 2001:da8:2:3f::2 (2001:da8:2:3f::2) 42.239 ms 42.219 ms 2001:da8:2:40::2 (2001:da8:2:40::2) 42.192 ms
10 2001:da8::666 (2001:da8::666) 42.080 ms 33.827 ms 33.879 ms

[shankerwangmiao]

唔，回头这件事我来跟进一下，另外 i.am.who 我去掉了，改为标准的 id.server

dig @2001:da8::666 id.server txt chaos

[shankerwangmiao]

如果要是 powerdns 的话，就是
https://doc.powerdns.com/recursor/settings.html#server-id