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Pourquoi ne peut pas résoudre les noms?

Comme n tas d’autres questions , je ne peux pas exécuter apt-get update de temps en temps . Redémarrer ou attendre un moment fait disparaître le problème. Je n'ai jamais de problèmes de ping ou de visite des URL respectives dans un navigateur.

J'ai essayé toutes les réponses positives en vain. Que fait apt qui est si différent de ping ou de mon navigateur? Par exemple, quand je lance apt-get update, je vois ceci:

Err:1 https://download.docker.com/linux/ubuntu xenial InRelease
  Could not resolve Host: download.docker.com
Err:2 https://deb.opera.com/opera-stable stable InRelease
  Could not resolve Host: deb.opera.com
Err:3 http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu xenial InRelease
  Could not resolve 'ppa.launchpad.net'
Err:4 http://ppa.launchpad.net/saiarcot895/myppa/ubuntu xenial InRelease
  Could not resolve 'ppa.launchpad.net'
Err:5 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu xenial InRelease
  Could not resolve 'ppa.launchpad.net'
Err:6 http://repository.spotify.com stable InRelease
  Could not resolve 'repository.spotify.com'
Err:7 http://dl.google.com/linux/chrome/deb stable InRelease
  Could not resolve 'dl.google.com'
Err:8 http://archive.ubuntu.com/ubuntu xenial InRelease
  Could not resolve 'archive.ubuntu.com'
Err:9 http://archive.ubuntu.com/ubuntu xenial-updates InRelease
  Could not resolve 'archive.ubuntu.com'
Err:10 http://archive.ubuntu.com/ubuntu xenial-backports InRelease
  Could not resolve 'archive.ubuntu.com'
Err:11 http://archive.ubuntu.com/ubuntu xenial-security InRelease
  Could not resolve 'archive.ubuntu.com'
Reading package lists... Done
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial/InRelease  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-updates/InRelease  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-backports/InRelease  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/xenial-security/InRelease  Could not resolve 'archive.ubuntu.com'
W: Failed to fetch https://download.docker.com/linux/ubuntu/dists/xenial/InRelease  Could not resolve Host: download.docker.com
W: Failed to fetch http://ppa.launchpad.net/danielrichter2007/grub-customizer/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net'
W: Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/InRelease  Could not resolve 'dl.google.com'
W: Failed to fetch https://deb.opera.com/opera-stable/dists/stable/InRelease  Could not resolve Host: deb.opera.com
W: Failed to fetch http://ppa.launchpad.net/saiarcot895/myppa/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net'
W: Failed to fetch http://repository.spotify.com/dists/stable/InRelease  Could not resolve 'repository.spotify.com'
W: Failed to fetch http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu/dists/xenial/InRelease  Could not resolve 'ppa.launchpad.net'
W: Some index files failed to download. They have been ignored, or old ones used instead.

Lancer ping download.docker.com:

PING d2h67oheeuigaw.cloudfront.net (52.85.41.233) 56(84) bytes of data.
64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=1 ttl=251 time=18.8 ms
64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=2 ttl=251 time=18.4 ms
64 bytes from server-52-85-41-233.mel50.r.cloudfront.net (52.85.41.233): icmp_seq=3 ttl=251 time=19.5 ms

Et visiter la page dans mon navigateur fonctionne bien. Comment puis-je faire apt-get "juste travailler"?

Voici le contenu de mon /etc/apt/resolv.conf:

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
search home.gateway
networkingaptupdates
4
quant

Exécutez cette commande depuis le terminal et vous pourrez utiliser apt et apt-get normalement à l'avenir :)

echo 'Acquire::ForceIPv4 "true";' | Sudo tee /etc/apt/apt.conf.d/99force-ipv4

4
Arun

Si /etc/atp/apt.conf existe, copiez le fichier, puis éditez l'original pour commenter la ligne suivante:

Acquire::http::Proxy "http://proxyaddress:proxyport";
1
jones0610