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HTML: tidy 5.6.0 the HTML assets

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It makes it easier for editing.
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Brian Cunnie
2020-12-01 08:39:20 -08:00
parent 459a86dab3
commit 0ac9e1895d
3 changed files with 156 additions and 187 deletions
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86
k8s/document_root/about.html
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@@ -1,19 +1,16 @@
<!doctype html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="generator" content="HTML Tidy for HTML5 for Apple macOS version 5.6.0">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,
initial-scale=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any
other head content must come *after* these tags -->
<title>About sslip.io</title>
<meta name="description" content="sslip.io">
<meta name="author" content="Brian Cunnie">
<!-- cute Green Lock icon -->
<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico">
<!--
<meta name="author" content="Brian Cunnie"><!-- cute Green Lock icon -->
<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico"><!--
Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!-- Optional theme -->
@@ -27,64 +24,62 @@ other head content must come *after* these tags -->
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle
collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false"
aria-controls="navbar">
<span class="sr-only">Toggle navigation </span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button> <a class="navbar-brand" href="/">sslip.io</a> </div>
<div id="navbar" class="collapse
navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="/">Home</a></li>
<li><a href="faq.html">FAQ</a></li>
<li class="active"><a href="about.html">About</a></li>
</ul>
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
aria-expanded="false" aria-controls="navbar"><span class="sr-only">Toggle navigation</span></button> <a class=
"navbar-brand" href="/">sslip.io</a>
</div>
<!--/.nav-collapse -->
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li>
<a href="/">Home</a>
</li>
<li>
<a href="faq.html">FAQ</a>
</li>
<li class="active">
<a href="about.html">About</a>
</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="container">
<div class="starter-template">
<h1>About sslip.io</h1>
<p><a href="https://github.com/tylerschultz">Tyler Schultz</a>,
<a href="https://github.com/APShirley">Alvaro Perez-Shirley</a>,
and <a href="https://github.com/cunnie">Brian Cunnie</a> created sslip.io on Tuesday August 11, 2015 during a
Pivotal Software-sponsored Hack Day. Thanks Pivotal!</p>
<p><a href="https://github.com/sstephenson">Sam Stephenson</a> built <a href="http://xip.io/">xip.io</a>, upon which
much of our code is based. He also suggested the name
<i>sslip.io</i>.</p>
<p><a href="https://github.com/justinjsmith">Justin Smith</a> advised us on the security implications of releasing
an SSL certificate and key to the general public.</p>
<div class="row">
<p></p>
<p><a href="https://github.com/tylerschultz">Tyler Schultz</a>, <a href="https://github.com/APShirley">Alvaro
Perez-Shirley</a>, and <a href="https://github.com/cunnie">Brian Cunnie</a> created sslip.io on Tuesday August
11, 2015 during a Pivotal Software-sponsored Hack Day. Thanks Pivotal!</p>
<p><a href="https://github.com/sstephenson">Sam Stephenson</a> built <a href="http://xip.io/">xip.io</a>, upon
which much of our code is based. He also suggested the name <i>sslip.io</i>.</p>
<p><a href="https://github.com/justinjsmith">Justin Smith</a> advised us on the security implications of
releasing an SSL certificate and key to the general public.</p>
<div class="row"></div>
<p>© 2015 Brian Cunnie, Pivotal Software</p>
</div>
<p>&copy; 2015 Brian Cunnie, Pivotal Software</p>
</div>
</div>
<!-- /.container -->
</div><!-- /.container -->
<!-- Bootstrap core JavaScript ================================================== -->
<!--
Placed at the end of the document so the pages load faster -->
<!-- jQuery
(necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!--
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> <!--
Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<!--
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> <!--
IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="https://raw.githubusercontent.com/twbs/bootstrap/master/docs/assets/js/ie10-viewport-bug-workaround.js"></script>
<script src=
"https://raw.githubusercontent.com/twbs/bootstrap/master/docs/assets/js/ie10-viewport-bug-workaround.js"></script>
<!--
Google Analytics -->
<script>
(function(i, s, o, g, r, a, m) {
i['GoogleAnalyticsObject'] = r;
i[r] = i[r] || function() {
@@ -101,5 +96,4 @@ other head content must come *after* these tags -->
ga('send', 'pageview');
</script>
</body>
</html>

211
k8s/document_root/faq.html
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@@ -1,19 +1,16 @@
<!doctype html>
<!DOCTYPE html>
<html lang="en">
<head>
<meta name="generator" content="HTML Tidy for HTML5 for Apple macOS version 5.6.0">
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,
initial-scale=1">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any
other head content must come *after* these tags -->
<title>sslip.io FAQ</title>
<meta name="description" content="sslip.io">
<meta name="author" content="Brian Cunnie">
<!-- cute Green Lock icon -->
<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico">
<!-- Latest
<meta name="author" content="Brian Cunnie"><!-- cute Green Lock icon -->
<link rel="shortcut icon" type="image/x-icon" href="img/favicon.ico"><!-- Latest
compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!-- Optional theme -->
@@ -27,28 +24,27 @@ other head content must come *after* these tags -->
<script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle
collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false"
aria-controls="navbar">
<span class="sr-only">Toggle navigation </span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button> <a class="navbar-brand" href="/">sslip.io</a> </div>
<div id="navbar" class="collapse
navbar-collapse">
<ul class="nav navbar-nav">
<li><a href="/">Home</a></li>
<li class="active"><a href="faq.html">FAQ</a></li>
<li><a href="about.html">About</a></li>
</ul>
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
aria-expanded="false" aria-controls="navbar"><span class="sr-only">Toggle navigation</span></button> <a class=
"navbar-brand" href="/">sslip.io</a>
</div>
<!--/.nav-collapse -->
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav">
<li>
<a href="/">Home</a>
</li>
<li class="active">
<a href="faq.html">FAQ</a>
</li>
<li>
<a href="about.html">About</a>
</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="container">
@@ -57,126 +53,100 @@ other head content must come *after* these tags -->
<p class="lead">Do I have to pay to use this service?</p>
<p>No, it's free.</p>
<p class="lead">Can I use this certificate on my commerce website?</p>
<p>Although there's no technical reason why you couldn't use
the sslip.io SSL key and certificate for your commerce
web, we <i>strongly</i> recommend against it: the key
is publicly available; your traffic isn't secure. sslip.io's
primary purpose is to assist developers who need to test
against valid SSL certs, not to safeguard content.</p>
<p class="lead">My webserver wants a certificate and an "intermediate certificate
chain"&mdash;where do I get that? </p>
<p>Certain web servers (e.g. <a href="http://www.tenable.com">Tenable's</a> <a href="http://www.tenable.com/products/nessus-vulnerability-scanner">Nessus</a> scanner) prefer to split the chained certificate file
(which has three concatenated certificates) into two
files: one file containing a single certificate for the
server itself (e.g. the "*.sslip.io" certificate), and
a second file containing the intermediate certificate
authorities (e.g. the two COMODO certificate authorities).</p>
<p>You can split the chained certificate file by hand, or
you can download them, pre-split, from GitHub: </p>
<p>Although there's no technical reason why you couldn't use the sslip.io SSL key and certificate for your
commerce web, we <i>strongly</i> recommend against it: the key is publicly available; your traffic isn't secure.
sslip.io's primary purpose is to assist developers who need to test against valid SSL certs, not to safeguard
content.</p>
<p class="lead">My webserver wants a certificate and an "intermediate certificate chain"—where do I get that?</p>
<p>Certain web servers (e.g. <a href="http://www.tenable.com">Tenable's</a> <a href=
"http://www.tenable.com/products/nessus-vulnerability-scanner">Nessus</a> scanner) prefer to split the chained
certificate file (which has three concatenated certificates) into two files: one file containing a single
certificate for the server itself (e.g. the "*.sslip.io" certificate), and a second file containing the
intermediate certificate authorities (e.g. the two COMODO certificate authorities).</p>
<p>You can split the chained certificate file by hand, or you can download them, pre-split, from GitHub:</p>
<ul>
<li>the server <a href="https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/sslip.io.crt.pem">certificate</a> ("*.sslip.io") </li>
<li>the intermediate certificate <a href="https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/intermediate-ca.crt.pem">chain</a> (the COMODO CAs)</li>
<li>the server <a href=
"https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/sslip.io.crt.pem">certificate</a> ("*.sslip.io")
</li>
<li>the intermediate certificate <a href=
"https://raw.githubusercontent.com/cunnie/sslip.io/master/ssl/intermediate-ca.crt.pem">chain</a> (the COMODO
CAs)
</li>
</ul>
<p class="lead">Why can't I use dots in my hostname? xip.io lets me use
dots. </p>
<p>You can't have dots, but you can have dashes: for example,
"www-sf-ca-us-10-9-9-142.sslip.io" will work with sslip.io's
wildcard SSL certificate, but "www.sf.ca.us.10.9.9.142.sslip.io"
will not. This is a technical limitation of wildcard
certs and the manner in which browsers treat them (read
more <a href="http://security.stackexchange.com/questions/10538/what-certificates-are-needed-for-multi-level-subdomains">here</a>).</p>
<p>This restricts sslip.io's usage model. For example, it
won't work properly with Cloud Foundry's app domain or
<p class="lead">Why can't I use dots in my hostname? xip.io lets me use dots.</p>
<p>You can't have dots, but you can have dashes: for example, "www-sf-ca-us-10-9-9-142.sslip.io" will work with
sslip.io's wildcard SSL certificate, but "www.sf.ca.us.10.9.9.142.sslip.io" will not. This is a technical
limitation of wildcard certs and the manner in which browsers treat them (read more <a href=
"http://security.stackexchange.com/questions/10538/what-certificates-are-needed-for-multi-level-subdomains">here</a>).</p>
<p>This restricts sslip.io's usage model. For example, it won't work properly with Cloud Foundry's app domain or
system domain.</p>
<p class="lead">Does sslip.io work with name-based virtual hosting? We
have multiple projects but only one webserver.</p>
<p> sslip.io interoperates quite well with <a href="https://en.wikipedia.org/wiki/Virtual_hosting#Name-based">name-based virtual hosting</a>.
You can prepend identifying information to the sslip.io
hostname without jeopardizing the address resolution, and then use
those hostnames to distinguish the content being served.
For example, let's assume that your webserver's IP address
is 10.9.9.30, and that you have three projects you're
working on (Apple, Google, and Facebook). You would use
the following three sslip.io hostnames: </p>
<p class="lead">Does sslip.io work with name-based virtual hosting? We have multiple projects but only one
webserver.</p>
<p>sslip.io interoperates quite well with <a href=
"https://en.wikipedia.org/wiki/Virtual_hosting#Name-based">name-based virtual hosting</a>. You can prepend
identifying information to the sslip.io hostname without jeopardizing the address resolution, and then use those
hostnames to distinguish the content being served. For example, let's assume that your webserver's IP address is
10.9.9.30, and that you have three projects you're working on (Apple, Google, and Facebook). You would use the
following three sslip.io hostnames:</p>
<ul>
<li>apple-10-9-9-30.sslip.io</li>
<li>facebook-10-9-9-30.sslip.io</li>
<li>google-10-9-9-30.sslip.io</li>
</ul>
<p class="lead">Can you make the hostnames easier to remember? It's as
hard as memorizing IP addresses.</p>
<p>Unfortunately, no. We appreciate that "52-0-56-137.sslip.io"
is not an easy-to-remember hostname, whereas something
along the lines of "aws-server.sslip.io" would be much
simpler, but we don't see an easy solution&mdash;we need
to be able to extract the IP address from the hostname
in order for our DNS nameserver to reply with the proper
address when queried.</p>
<p class="lead">Can you make the hostnames easier to remember? It's as hard as memorizing IP addresses.</p>
<p>Unfortunately, no. We appreciate that "52-0-56-137.sslip.io" is not an easy-to-remember hostname, whereas
something along the lines of "aws-server.sslip.io" would be much simpler, but we don't see an easy solution—we
need to be able to extract the IP address from the hostname in order for our DNS nameserver to reply with the
proper address when queried.</p>
<p class="lead">Do you have support for IPv6-style addresses?</p>
<p>Not yet, but if there's enough demand for it we might try
implementing it.</p>
<p class="lead">Why did you choose a 4096-bit key instead of a 2048-bit
key?
</p>
<p>We couldn't help ourselves&mdash;when it comes to keys,
longer is better. In retrospect there were flaws in our
thinking: certain hardware devices, e.g. YubiKeys, only
support keys of length 2048 bits or less. Also, there
was no technical value in making a long key&mdash;it's
publicly available on GitHub, so a zero-bit key would
have been equally secure.</p>
<p class="lead">Do I have to use the sslip.io domain? I'd rather have a
valid cert for my domain.</p>
<p>If you want valid SSL certificate, and you don't want to
use the sslip.io domain, then you'll need to purchase
a certificate for your domain. We purchased ours from
<a href="https://www.cheapsslshop.com">Cheap SSL Shop</a>,
but use a vendor with whom you're comfortable. </p>
<p class="lead">What is the sslip.io certificate chain? </p>
<p>The sslip.io certificate chain is the series of certificates,
each signing the next, with a root certificate at the
top. It looks like the following:</p>
<div class="col-sm-12">
<img src="img/cert_chain.png" height="206" /> </div>
<p>Not yet, but if there's enough demand for it we might try implementing it.</p>
<p class="lead">Why did you choose a 4096-bit key instead of a 2048-bit key?</p>
<p>We couldn't help ourselves—when it comes to keys, longer is better. In retrospect there were flaws in our
thinking: certain hardware devices, e.g. YubiKeys, only support keys of length 2048 bits or less. Also, there was
no technical value in making a long key—it's publicly available on GitHub, so a zero-bit key would have been
equally secure.</p>
<p class="lead">Do I have to use the sslip.io domain? I'd rather have a valid cert for my domain.</p>
<p>If you want valid SSL certificate, and you don't want to use the sslip.io domain, then you'll need to purchase
a certificate for your domain. We purchased ours from <a href="https://www.cheapsslshop.com">Cheap SSL Shop</a>,
but use a vendor with whom you're comfortable.</p>
<p class="lead">What is the sslip.io certificate chain?</p>
<p>The sslip.io certificate chain is the series of certificates, each signing the next, with a root certificate
at the top. It looks like the following:</p>
<div class="col-sm-12"><img src="img/cert_chain.png" height="206"></div>
<div class="row"></div>
<p></p>
<p>Note that the "root" certificate is "AddTrust's External
CA Root", which issued a certificate to the "COMODO RSA
Certification Authority", which in turn issued a certificate
to the "COMODO RSA Domain Validation Secure Server CA"
which in turn issued our certificate, "*.sslip.io".
</p>
<p>Note that the "root" certificate is "AddTrust's External CA Root", which issued a certificate to the "COMODO
RSA Certification Authority", which in turn issued a certificate to the "COMODO RSA Domain Validation Secure
Server CA" which in turn issued our certificate, "*.sslip.io".</p>
<p class="lead">How is "sslip.io" pronounced?</p>
<p>ESS-ESS-ELL-EYE-PEE-DOT-EYE-OH</p>
<p class="lead">Where do I report bugs? I think I found one.</p>
<p>Open an issue on <a href="https://github.com/cunnie/sslip.io/issues">GitHub</a>;
we're tracking our issues there.</p>
<p class="lead">There's a typo/mistake on the sslip.io website. </p>
<p>Open an issue on <a href="https://github.com/cunnie/sslip.io/issues">GitHub</a>; we're tracking our issues
there.</p>
<p class="lead">There's a typo/mistake on the sslip.io website.</p>
<p>Thanks! We love <a href="https://github.com/cunnie/sslip.io/pulls">pull requests</a>.</p>
<div class="row">
<p></p>
<div class="row"></div>
<p>© 2015 Brian Cunnie, Pivotal Software</p>
</div>
<p>&copy; 2015 Brian Cunnie, Pivotal Software </p>
</div>
</div>
<!-- /.container -->
</div><!-- /.container -->
<!-- Bootstrap core JavaScript ================================================== -->
<!--
Placed at the end of the document so the pages load faster -->
<!-- jQuery
(necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<!--
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> <!--
Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<!--
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script> <!--
IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="https://raw.githubusercontent.com/twbs/bootstrap/master/docs/assets/js/ie10-viewport-bug-workaround.js"></script>
<script src=
"https://raw.githubusercontent.com/twbs/bootstrap/master/docs/assets/js/ie10-viewport-bug-workaround.js"></script>
<!--
Google Analytics -->
<script>
(function(i, s, o, g, r, a, m) {
i['GoogleAnalyticsObject'] = r;
i[r] = i[r] || function() {
@@ -193,5 +163,4 @@ other head content must come *after* these tags -->
ga('send', 'pageview');
</script>
</body>
</html>

36
k8s/document_root/index.html
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@@ -69,7 +69,9 @@ src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]-->
<td>dot separators</td>
</tr>
<tr class="even">
<td><a href="https://52-0-56-137.sslip.io">https://52-0-56-137.sslip.io</a></td>
<td>
<a href="https://52-0-56-137.sslip.io">https://52-0-56-137.sslip.io</a>
</td>
<td>52.0.56.137</td>
<td>dash separators, sslip.io website mirror (IPv4)</td>
</tr>
@@ -84,7 +86,9 @@ src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]-->
<td>subdomain + dashes</td>
</tr>
<tr class="odd">
<td><a href="https://www-78-46-204-247.sslip.io">https://www-78-46-204-247.sslip.io</a></td>
<td>
<a href="https://www-78-46-204-247.sslip.io">https://www-78-46-204-247.sslip.io</a>
</td>
<td>78.46.204.247</td>
<td>embedded, sslip.io website mirror (IPv4)</td>
</tr>
@@ -94,7 +98,9 @@ src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]-->
<td>IPv6 — always use dashes</td>
</tr>
<tr class="odd">
<td><a href="https://2a01-4f8-c17-b8f--2.sslip.io">https://2a01-4f8-c17-b8f--2.sslip.io</a></td>
<td>
<a href="https://2a01-4f8-c17-b8f--2.sslip.io">https://2a01-4f8-c17-b8f--2.sslip.io</a>
</td>
<td>2a01:4f8:c17:b8f::2</td>
<td>sslip.io website mirror (IPv6)</td>
</tr>
@@ -103,16 +109,14 @@ src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]-->
<h3 id="branding">Branding / White Label / Custom Domains</h3>
<p>sslip.io can be used to brand your own site (you don’t need to use the sslip.io domain). For example, say you
own the domain “example.com”, and you want your subdomain, “xip.example.com” to have xip.io-style features. To
accomplish this, set the following four DNS servers as NS records for the subdomain
“xip.example.com”</p>
accomplish this, set the following four DNS servers as NS records for the subdomain “xip.example.com”</p>
<div class="alert alert-warning" role="alert">
<b>2019-07-31 Nameserver (NS) Change!</b> Update your nameservers. We
have deprecated ns-vultr.nono.io because it's turned off the last week
of the month when it has reached its 3 TB bandwidth quota.
<b>2019-07-31 Nameserver (NS) Change!</b> Update your nameservers. We have deprecated ns-vultr.nono.io because
it's turned off the last week of the month when it has reached its 3 TB bandwidth quota.
</div>
<div class="alert alert-warning" role="alert">
<b>2018-09-20 Nameserver (NS) Change!</b> Update your nameservers. We have
deprecated ns-he.nono.io <del>in favor of ns-vultr.nono.io</del>.
<b>2018-09-20 Nameserver (NS) Change!</b> Update your nameservers. We have deprecated ns-he.nono.io <del>in
favor of ns-vultr.nono.io</del>.
</div>
<table class="table">
<thead>
@@ -160,11 +164,11 @@ src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script> <![endif]-->
"https://drive.google.com/open?id=0ByweFu4TspftMWJPdE1US0hQTGc">here</a>.</p>
<hr>
<h4 id="footnotes">Footnotes</h4>
<p><a id="status"><sup>[Status]</sup></a> A status of “build failing” rarely means the system is
failing. It’s more often an indication that when the servers were last checked (currently every six hours), the
CI (continuous integration) <a href="https://ci.nono.io/teams/main/pipelines/sslip.io">server</a> had difficulty
reaching one of the four sslip.io nameservers. That’s normal. <sup><a href="#timeout" class=
"alert-link">[connection timed out]</a></sup></p>
<p><a id="status"><sup>[Status]</sup></a> A status of “build failing” rarely means the system is failing. It’s
more often an indication that when the servers were last checked (currently every six hours), the CI (continuous
integration) <a href="https://ci.nono.io/teams/main/pipelines/sslip.io">server</a> had difficulty reaching one of
the four sslip.io nameservers. That’s normal. <sup><a href="#timeout" class="alert-link">[connection timed
out]</a></sup></p>
<p><a id="timeout"><sup>[connection timed out]</sup></a></p>
<p>DNS runs over <a href="https://en.wikipedia.org/wiki/User_Datagram_Protocol">UDP</a> which has no guaranteed
delivery, and it’s not uncommon for the packets to get lost in transmission. DNS clients are programmed to
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