 | loukkyV2EX 第 202683 号会员，加入于 2016-11-23 23:22:04 +08:00今日活跃度排名 8917 |
loukky 最近回复了
10 天前 回复了 wi11iamZ 创建的主题 宽带症候群 现在国内网页测速用哪家 |
32 天前 回复了 qqqfreeboycn 创建的主题 DNS 请教，国家自然资源部官网域名是不是在境外大多数地区都解析不出来？ |
正常，比如 mil 域名还禁止了大陆的解析
39 天前 回复了 test0103 创建的主题 DNS 如何排查自建 DNS 中的问题？ |
@test0103 那肯定会被污染的，毕竟，UDP53 过墙。
我在国外搭建的，很奇怪的问题，用不同的机器搭建都有这个问题。4.8.8 和 5.3.0 都会这样。
用 dig 多次测试就会复现。有缓存都会卡几秒钟……完全找不到原因
我在国外搭建的，很奇怪的问题，用不同的机器搭建都有这个问题。4.8.8 和 5.3.0 都会这样。
用 dig 多次测试就会复现。有缓存都会卡几秒钟……完全找不到原因
41 天前 回复了 test0103 创建的主题 DNS 如何排查自建 DNS 中的问题？ |
@test0103 你的 pdns 稳定吗？我用云服务器搭建了 pdns 递归，在服务器上测试本地解析，偶尔都会卡几秒钟才会出结果。完全找不到什么原因。
179 天前 回复了 knightgao2 创建的主题 宽带症候群 0512 地区 电信大范围再收回 公网 v4 |
四川联通。30 元/500M 。一年才 360 ，IPV4,IPV6 都有且是公网。
267 天前 回复了 loukky 创建的主题 DNS 阿里公共 DNS 的后端是不是有问题 |
@mytsing520 感谢，简单测试了下，确实每次都能携带 esc 了
267 天前 回复了 danaesoziommw49 创建的主题 全球工单系统 大清早，你们的阿里云 dns 崩了吗？ |
阿里云的 ecs 确实有点问题。
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21080
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 17 IN TXT "47.254.235.11"
;; Query time: 172 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:40 CST 2025
;; MSG SIZE rcvd: 89
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51080
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1408
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 44 IN TXT "47.254.235.11"
o-o.myaddr.l.google.com. 44 IN TXT "edns0-client-subnet 27.8.0.0/25"
;; Query time: 171 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:41 CST 2025
;; MSG SIZE rcvd: 133
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21080
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 17 IN TXT "47.254.235.11"
;; Query time: 172 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:40 CST 2025
;; MSG SIZE rcvd: 89
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51080
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1408
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 44 IN TXT "47.254.235.11"
o-o.myaddr.l.google.com. 44 IN TXT "edns0-client-subnet 27.8.0.0/25"
;; Query time: 171 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:41 CST 2025
;; MSG SIZE rcvd: 133
269 天前 回复了 baraja 创建的主题 DNS 测试了几家主流 DNS 的 ECS 功能 |
最近阿里 DNS 通过国外 VPS 解析，传递国内 IP 的子网，老是解析到当地，不知道怎么回事。
用 VPS 测试了下，不知道是不是正常的。
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21080
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 17 IN TXT "47.254.235.11"
;; Query time: 172 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:40 CST 2025
;; MSG SIZE rcvd: 89
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51080
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1408
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 44 IN TXT "47.254.235.11"
o-o.myaddr.l.google.com. 44 IN TXT "edns0-client-subnet 27.8.0.0/25"
;; Query time: 171 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:41 CST 2025
;; MSG SIZE rcvd: 133
用 VPS 测试了下，不知道是不是正常的。
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21080
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 17 IN TXT "47.254.235.11"
;; Query time: 172 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:40 CST 2025
;; MSG SIZE rcvd: 89
[opc@instance-sjc2 ~]$ dig @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; <<>> DiG 9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.16 <<>> @223.5.5.5 txt o-o.myaddr.l.google.com +subnet=27.8.59.1/24
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51080
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1408
; CLIENT-SUBNET: 27.8.59.0/24/24
;; QUESTION SECTION:
;o-o.myaddr.l.google.com. IN TXT
;; ANSWER SECTION:
o-o.myaddr.l.google.com. 44 IN TXT "47.254.235.11"
o-o.myaddr.l.google.com. 44 IN TXT "edns0-client-subnet 27.8.0.0/25"
;; Query time: 171 msec
;; SERVER: 223.5.5.5#53(223.5.5.5)
;; WHEN: Sat Mar 01 20:40:41 CST 2025
;; MSG SIZE rcvd: 133
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