@
HalloCQ 目前国内就电信，国外转 CloudflareDNS 了。
从以下测试中 CFDNS 明显优于 GDNS
测试网络环境：HKCN2
```
root@HIK:~# dig @
1.1.1.1
www.google.com; <<>> DiG 9.11.3-1ubuntu1.8-Ubuntu <<>> @
1.1.1.1
www.google.com; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23044
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1452
;; QUESTION SECTION:
;
www.google.com. IN A
;; ANSWER SECTION:
www.google.com. 134 IN A 172.217.163.228
;; Query time: 3 msec
;; SERVER: 1.1.1.1#53(1.1.1.1)
;; WHEN: Fri Jul 26 14:38:13 CST 2019
;; MSG SIZE rcvd: 59
root@HIK:~# dig @
8.8.8.8
www.google.com; <<>> DiG 9.11.3-1ubuntu1.8-Ubuntu <<>> @
8.8.8.8
www.google.com; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 11797
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;
www.google.com. IN A
;; ANSWER SECTION:
www.google.com. 27 IN A 216.58.199.4
;; Query time: 13 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri Jul 26 14:38:28 CST 2019
;; MSG SIZE rcvd: 59
```
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