blob: b283e3e821891aa04b4d5f94ee988af022dd4921 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Language" content="en" />
<title>dnsfunnel - A small local DNS cache daemon</title>
<meta name="Description" content="dnsfunnel - a small local DNS cache daemon" />
<meta name="Keywords" content="dnsfunnel DNS domain cache local /etc/resolv.conf resolver forwarder laurent bercot ska skarnet" />
<!-- <link rel="stylesheet" type="text/css" href="//skarnet.org/default.css" /> -->
</head>
<body>
<p>
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> dnsfunnel </h1>
<h2> What is it ? </h2>
<p>
dnsfunnel is a small daemon listening to DNS client requests over UDP
(typically from the libc's
<a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/getaddrinfo.html">getaddrinfo()</a>
function) and forwards them to a list of DNS caches. It provides the
client with the first answer it gets, trimming the answer so it fits
in an UDP packet.
</p>
<p>
dnsfunnel is especially useful for distributions using the
<a href="https://musl-libc.org">musl</a> libc, which does not support
TCP DNS transport. It was originally written to be used in the
<a href="https://alpinelinux.org/">Alpine Linux</a> distribution.
</p>
<hr />
<h2> Installation </h2>
<h3> Requirements </h3>
<ul>
<li> A POSIX-compliant system with a standard C development environment. </li>
<li> GNU make, version 3.81 or later </li>
<li> <a href="//skarnet.org/software/skalibs/">skalibs</a> version
2.10.0.3 or later. It's a build-time requirement. It's also a run-time
requirement if you link against the shared version of the skalibs
library. </li>
<li> <a href="//skarnet.org/software/s6-dns/">s6-dns</a> version
2.3.5.1 or later. It's a build-time requirement. It's also a run-time
requirement if you link against the shared version of the s6dns
library. </li>
</ul>
<h3> Licensing </h3>
<p>
dnsfunnel is free software. It is available under the
<a href="https://opensource.org/licenses/ISC">ISC license</a>.
</p>
<h3> Download </h3>
<ul>
<li> The current released version of dnsfunnel is
<a href="dnsfunnel-0.0.1.1.tar.gz">0.0.1.1</a>.
(dnsfunnel is in beta development at the moment. Use at your own
risk.) </li>
<li> Alternatively, you can checkout a copy of the
<a href="//git.skarnet.org/cgi-bin/cgit.cgi/dnsfunnel/">dnsfunnel
git repository</a>:
<pre> git clone git://git.skarnet.org/dnsfunnel </pre> </li>
<li> There's also a
<a href="https://github.com/skarnet/dnsfunnel">GitHub mirror</a>
of the dnsfunnel git repository. </li>
</ul>
<h3> Compilation </h3>
<ul>
<li> See the enclosed INSTALL file for installation details. </li>
</ul>
<h3> Upgrade notes </h3>
<ul>
<li> <a href="upgrade.html">This page</a> lists the differences to be aware of between
the previous versions of dnsfunnel and the current one. </li>
</ul>
<hr />
<h2> Reference </h2>
<h3> Commands </h3>
<ul>
<li><a href="dnsfunneld.html">The <tt>dnsfunneld</tt> program</a></li>
<li><a href="dnsfunnel-translate.html">The <tt>dnsfunnel-translate</tt> program</a></li>
</ul>
<h2> Related resources </h2>
<ul>
<li> <tt>dnsfunnel</tt> is discussed on the
<a href="//skarnet.org/lists/#skaware">skaware</a> mailing-list. </li>
</ul>
</body>
</html>
|
