Use DHCP-provided DNS or not based on connected network












1














My current networking setup (on Arch Linux) involves:





  • stubby to resolve DNS requests with DNS-over-TLS.


  • dnsmasq to cache DNS queries (and nothing else).


  • openresolv to manage resolv.conf.


  • NetworkManager to set-up and tear-down network connections.


I have stubby listening on locahost on some random port, dnsmasq listening on localhost:53 and resolving DNS queries through stubby, and openresolv is set up to put localhost in resolv.conf and provide any other DNS entry (for example those obtained through DHCP by NetworkManager) to dnsmasq via separate configuration files:



# /etc/resolvconf.conf
name_servers=127.0.0.1

dnsmasq_conf=/etc/dnsmasq-conf.conf
dnsmasq_resolv=/etc/dnsmasq-resolv.conf


However, at the moment those extra entries are being ignored.




What is the best way to use these entries only when connected to one of a few whitelisted networks?




To clarify, I know that with NetworkManager I can override the DNS entries provided over DHCP on a network-by-network basis, but what I would like to do is the opposite: use stubby by default and the DHCP entries for only one or two networks, as needed.










share|improve this question



























    1














    My current networking setup (on Arch Linux) involves:





    • stubby to resolve DNS requests with DNS-over-TLS.


    • dnsmasq to cache DNS queries (and nothing else).


    • openresolv to manage resolv.conf.


    • NetworkManager to set-up and tear-down network connections.


    I have stubby listening on locahost on some random port, dnsmasq listening on localhost:53 and resolving DNS queries through stubby, and openresolv is set up to put localhost in resolv.conf and provide any other DNS entry (for example those obtained through DHCP by NetworkManager) to dnsmasq via separate configuration files:



    # /etc/resolvconf.conf
    name_servers=127.0.0.1

    dnsmasq_conf=/etc/dnsmasq-conf.conf
    dnsmasq_resolv=/etc/dnsmasq-resolv.conf


    However, at the moment those extra entries are being ignored.




    What is the best way to use these entries only when connected to one of a few whitelisted networks?




    To clarify, I know that with NetworkManager I can override the DNS entries provided over DHCP on a network-by-network basis, but what I would like to do is the opposite: use stubby by default and the DHCP entries for only one or two networks, as needed.










    share|improve this question

























      1












      1








      1







      My current networking setup (on Arch Linux) involves:





      • stubby to resolve DNS requests with DNS-over-TLS.


      • dnsmasq to cache DNS queries (and nothing else).


      • openresolv to manage resolv.conf.


      • NetworkManager to set-up and tear-down network connections.


      I have stubby listening on locahost on some random port, dnsmasq listening on localhost:53 and resolving DNS queries through stubby, and openresolv is set up to put localhost in resolv.conf and provide any other DNS entry (for example those obtained through DHCP by NetworkManager) to dnsmasq via separate configuration files:



      # /etc/resolvconf.conf
      name_servers=127.0.0.1

      dnsmasq_conf=/etc/dnsmasq-conf.conf
      dnsmasq_resolv=/etc/dnsmasq-resolv.conf


      However, at the moment those extra entries are being ignored.




      What is the best way to use these entries only when connected to one of a few whitelisted networks?




      To clarify, I know that with NetworkManager I can override the DNS entries provided over DHCP on a network-by-network basis, but what I would like to do is the opposite: use stubby by default and the DHCP entries for only one or two networks, as needed.










      share|improve this question













      My current networking setup (on Arch Linux) involves:





      • stubby to resolve DNS requests with DNS-over-TLS.


      • dnsmasq to cache DNS queries (and nothing else).


      • openresolv to manage resolv.conf.


      • NetworkManager to set-up and tear-down network connections.


      I have stubby listening on locahost on some random port, dnsmasq listening on localhost:53 and resolving DNS queries through stubby, and openresolv is set up to put localhost in resolv.conf and provide any other DNS entry (for example those obtained through DHCP by NetworkManager) to dnsmasq via separate configuration files:



      # /etc/resolvconf.conf
      name_servers=127.0.0.1

      dnsmasq_conf=/etc/dnsmasq-conf.conf
      dnsmasq_resolv=/etc/dnsmasq-resolv.conf


      However, at the moment those extra entries are being ignored.




      What is the best way to use these entries only when connected to one of a few whitelisted networks?




      To clarify, I know that with NetworkManager I can override the DNS entries provided over DHCP on a network-by-network basis, but what I would like to do is the opposite: use stubby by default and the DHCP entries for only one or two networks, as needed.







      linux dns networkmanager dnsmasq resolv.conf






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 42 mins ago









      A.P.

      1737




      1737



























          active

          oldest

          votes











          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "106"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f491473%2fuse-dhcp-provided-dns-or-not-based-on-connected-network%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown






























          active

          oldest

          votes













          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Unix & Linux Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f491473%2fuse-dhcp-provided-dns-or-not-based-on-connected-network%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          サソリ

          広島県道265号伴広島線

          Setup Asymptote in Texstudio