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    <div class="moz-cite-prefix">Am 16.01.2019 um 23:06 schrieb David
      Cowden:<br>
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cite="mid:CACN7iOBQP9e1Q=CB_z2nQ8B8PY_aw2HEbv_AAA2aaAqScK-=PQ@mail.gmail.com">
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          <div dir="ltr" class="gmail_attr">On Wed, Jan 16, 2019 at 1:29
            PM Fabian Schwamborn <<a
              href="mailto:fabian@familie-schwamborn.com"
              moz-do-not-send="true">fabian@familie-schwamborn.com</a>>
            wrote:<br>
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              <p>I think you misunderstood me. Most broadband providers
                don't offer fixed IPv4. Due to privacy considerations,
                even under IPv6 on normal connections, addresses will
                always change. (prefix) As soon as an address changes
                and my dynamic DNS system registers it, an IPsec or
                OpenVPN client on my phone can reconnect. (This happens
                once a week).<br>
                The Wireguard app simply lacks a monitor to see if the
                IP address has changed. Therefore a ttl in the DNS was
                introduced .... (After a registered loss of the
                connection - also shown in the log - no DNS request is
                executed and the tunnel breaks down permanently.)</p>
              <p>I think the</p>
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          <div>Yes, I thought you were asking for what you already have
            setup. My apologies.<br>
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              <p>se are the most common scenarios with OpenWRT routers
                ...<br>
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              <p>Having a DNS entry does not mean that it always points
                to a static ip, so when a tunnel disconnects, the
                Android-app itself (userspace) should handle this like
                many other existing VPN-Clients do by a re-query of the
                DNS entry...</p>
              <p>My question is, is there any opinion on such an
                implementation? Should i try to implement it into the
                android app and provide the code? (Unfortunately i am
                not a good android app-developer)<br>
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          <div>This sounds like something the wg-go userspace should
            support, not the android or ios app ui. <br>
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    <p>The wg-go userspace application is just the interface to the
      kernel module (or an userspace program, that emulates the kernel
      module)</p>
    <p>The Linux-Kernel is not able to resolve any DNS because it could
      only handle IP-Adresses. I don't think that it would be a good
      idea to write a dns-resolver for a kernel module. <br>
    </p>
    <p>From my point of view, each connected endpoint has to be
      monitored periodically by a userspace program (in this case java
      or an additional go-module). In case of a tunnel malfunktion OR
      based on a timer the Hostname has to be re-resolved. <br>
    </p>
    <p>Therefore my current question: Are custom code contributions
      welcome in this respect? <br>
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    <p>I am currently thinking about adding a timer-supported tunnel
      monitoring to the app.</p>
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cite="mid:CACN7iOBQP9e1Q=CB_z2nQ8B8PY_aw2HEbv_AAA2aaAqScK-=PQ@mail.gmail.com">
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              <div class="gmail-m_6222563726764716946moz-cite-prefix">Am
                16.01.2019 um 21:57 schrieb David Cowden:<br>
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                <div dir="ltr">You need to setup dns for your home site
                  then use that to connect. Or you need to synchronize
                  the endpoint out of band. I can't imagine this is
                  something wg wants to tackle--this is a general
                  problem all software encounters.<br>
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                  <div dir="ltr"
                    class="gmail-m_6222563726764716946gmail_attr">On
                    Tue, Jan 15, 2019 at 10:52 PM Fabian Schwamborn <<a
                      href="mailto:fabian@familie-schwamborn.com"
                      target="_blank" moz-do-not-send="true">fabian@familie-schwamborn.com</a>>
                    wrote:<br>
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                      <p class="MsoNormal">Hello,</p>
                      <p class="MsoNormal"> </p>
                      <p class="MsoNormal">I have a suggestion for
                        improving the Android app or would like to ask
                        if such a change would be desirable in general
                        (e.g. pull request):</p>
                      <p class="MsoNormal">I'm using Wireguard as a
                        connection between my home router and my mobile
                        phone, but unfortunately I don't have a fixed IP
                        address. As soon as the IP address changes, the
                        app does not reconnect. (Happens once a week)<br>
                      </p>
                      <p class="MsoNormal">Is it possible to integrate a
                        function into the app, that pings through the
                        tunnel so that you can perform a keep-alive
                        check and reconnect the tunnel completely after
                        a failure (including DNS request)?</p>
                      <p class="MsoNormal">Is it conceivable, to
                        implement a DNS-check function in the app? (E.g.
                        like the existing example DNS check script for
                        Linux works?)</p>
                      <p class="MsoNormal">Then the app would have the
                        same functionality as my previous IP-Sec client.
                        This would also allow better coverage of
                        failover IP scenarios.</p>
                      <p class="MsoNormal"><br>
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                      <p class="MsoNormal">Best Regards  </p>
                      <p class="MsoNormal">Fabian</p>
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