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Docker 이름 서버를 쿼리하는 방법은 무엇입니까?

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Docker 이름 서버를 쿼리하는 방법은 무엇입니까?

Ubuntu 18.04를 업데이트하려고 할 때 문제가 있습니다

Err:13 https://get.docker.com/ubuntu docker InRelease                                                                                            
  403  Forbidden [IP: 143.204.15.85 443]

나는 주변을 둘러보고 dig를 사용하여 도커 네임서버를 쿼리하기 시작했습니다. 어쨌든 제가 얻은 정보에 따르면 문제를 해결하는 방법을 모르겠습니다.

dig @8.8.8.8  get.docker.com

; <<>> DiG 9.11.3-1ubuntu1.7-Ubuntu <<>> @8.8.8.8 get.docker.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 4347
;; flags: qr rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;get.docker.com.            IN  A

;; ANSWER SECTION:
get.docker.com.     119 IN  CNAME   d3cxuo8f8w64ms.cloudfront.net.
d3cxuo8f8w64ms.cloudfront.net. 59 IN    A   143.204.214.94
d3cxuo8f8w64ms.cloudfront.net. 59 IN    A   143.204.214.26
d3cxuo8f8w64ms.cloudfront.net. 59 IN    A   143.204.214.20
d3cxuo8f8w64ms.cloudfront.net. 59 IN    A   143.204.214.98

;; Query time: 97 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Jun 19 07:06:39 CEST 2019
;; MSG SIZE  rcvd: 150

그러나 docker.com만이 다른 출력을 제공합니다.

 dig @8.8.8.8  docker.com

; <<>> DiG 9.11.3-1ubuntu1.7-Ubuntu <<>> @8.8.8.8 docker.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 57084
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;docker.com.            IN  A

;; ANSWER SECTION:
docker.com.     59  IN  A   52.86.8.163
docker.com.     59  IN  A   52.205.36.130
docker.com.     59  IN  A   3.217.62.246

;; Query time: 62 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Jun 19 07:06:42 CEST 2019
;; MSG SIZE  rcvd: 87

및 docs.dockers.com

dig @8.8.8.8 docs.docker.com/install/linux/docker-ce/ubuntu/

; <<>> DiG 9.11.3-1ubuntu1.7-Ubuntu <<>> @8.8.8.8 docs.docker.com/install/linux/docker-ce/ubuntu/
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 3301
;; flags: qr rd ra ad; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
;; QUESTION SECTION:
;docs.docker.com/install/linux/docker-ce/ubuntu/. IN A

;; AUTHORITY SECTION:
.           86393   IN  SOA a.root-servers.net. nstld.verisign-grs.com. 2019061900 1800 900 604800 86400

;; Query time: 42 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Wed Jun 19 07:15:40 CEST 2019
;; MSG SIZE  rcvd: 151

이제 어떻게 해야 하나요? 채굴 결과를 어떻게 해석하나요?

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