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expand default DNS information

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Daniel Micay 2021-01-21 17:13:39 -05:00
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static/faq.html
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<article id="default-dns"> <article id="default-dns">
<h3><a href="#default-dns">Which DNS servers are used by default?</a></h3> <h3><a href="#default-dns">Which DNS servers are used by default?</a></h3>
<p>By default, the OS uses the network-provided DNS servers, whether those come from <p>The OS uses the network-provided DNS servers by default. Typically, dynamic
DHCP or static network configuration. VPNs provide their own DNS servers. If no DNS IP configuration is used to auto-configure the client on the network. IPv4 DNS
servers are provided, GrapheneOS uses <a href="https://developers.cloudflare.com/1.1.1.1/what-is-1.1.1.1/">Cloudflare DNS</a> servers are obtained via DHCP and IPv6 DNS servers are obtained via RDNSS. For
as the fallback rather than Google Public DNS. In practice, the fallback is rarely used a static IP configuration, the DNS servers are manually configured as part of
and has little real world impact.</p> the static configuration.</p>
<p>A VPN provides a network layered on top of the underlying networks and the
OS uses the VPN-provided DNS servers for everything beyond resolving the IP
address of the VPN and performing network connectivity checks on each of the
underlying networks in addition to the VPN itself.</p>
<p>Using the network-provided DNS servers is the best way to blend in with
other users. The network and web sites can fingerprint and track users based
on a non-default DNS configuration. Our recommendation for general purpose
usage is to use the network-provided DNS servers.</p>
<p>In some broken or unusual network environments, the network could fail to
provide DNS servers as part of dynamic IP configuration. The OS has high
availability fallback DNS servers to handle this case. A network can fail to
provide DNS servers in order to fingerprint clients based on what they use as
the fallback so it's important for it to be consistent across each install.
GrapheneOS replaces Google Public DNS with
<a href="https://developers.cloudflare.com/1.1.1.1/what-is-1.1.1.1/">Cloudflare
DNS</a> for the fallback DNS servers due to the superior privacy policy and
widespread usage including as the fallback DNS servers in other Android-based
operating systems. We're considering hosting our own servers and offering a
toggle for using the standard (Google) servers to blend in with other devices
similarly to how we handle the internet connectivity checks.</p>
</article> </article>
<article id="custom-dns"> <article id="custom-dns">