| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-tools-lo" role="wrap">
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| 9 | <?dbhtml filename="lo-iface.html"?>
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| 10 |
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| 11 | <sect1info condition="script">
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| 12 | <productname>iproute2</productname>
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| 13 | <productnumber>&iproute2-version;</productnumber>
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| 14 | <address>&iproute2-url;</address>
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| 15 | </sect1info>
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| 16 |
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| 17 | <title>Setting Up Loopback Network Interface with IPRoute-&iproute2-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-tools-lo">
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| 20 | <primary sortas="a-IPRoute2">IPRoute2</primary>
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| 21 | <secondary>tools</secondary>
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| 22 | </indexterm>
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| 23 |
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| 24 | <sect2 role="package">
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| 25 | <title/>
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| 26 |
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| 27 | <para>The IPRoute2 package contains programs for basic and advanced IPV4-based
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| 28 | networking. Now we need <command>ip</command> from it to bring up
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| 29 | loopback network interface, which is expected by the testsuites of
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| 30 | various packages.</para>
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| 31 |
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| 32 | <segmentedlist>
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| 33 | <segtitle>&buildtime;</segtitle>
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| 34 | <segtitle>&diskspace;</segtitle>
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| 35 |
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| 36 | <seglistitem>
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| 37 | <seg>&iproute2-tmp-sbu;</seg>
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| 38 | <seg>&iproute2-tmp-du;</seg>
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| 39 | </seglistitem>
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| 40 | </segmentedlist>
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| 41 |
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| 42 | </sect2>
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| 43 |
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| 44 | <sect2 role="installation">
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| 45 | <title>Use IPRoute2 to Set Up Loopback Network Interface</title>
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| 46 |
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| 47 | <para>IPRoute2 package has several dependencies not installed yet, but
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| 48 | we only need <command>ip</command> utility from the package now.
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| 49 | Disable the build of other utilities:</para>
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| 50 |
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| 51 | <screen><userinput remap="pre">sed '/SUBDIRS/s/=.*/=lib ip/' -i Makefile</userinput></screen>
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| 52 |
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| 53 | <para>Compile the package:</para>
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| 54 |
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| 55 | <screen><userinput remap="make">PKG_CONFIG=false make</userinput></screen>
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| 56 |
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| 57 | <variablelist>
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| 58 | <title>The meaning of the environment variable:</title>
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| 59 |
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| 60 | <varlistentry>
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| 61 | <term><parameter>PKG_CONFIG=false</parameter></term>
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| 62 | <listitem>
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| 63 | <para>The building system attempts to find dependencies with
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| 64 | <command>pkg-config</command>, which is not installed yet.
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| 65 | We can override it since <command>ip</command> utility does not
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| 66 | need these dependencies.</para>
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| 67 | </listitem>
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| 68 | </varlistentry>
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| 69 | </variablelist>
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| 70 |
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| 71 | <para>It's not needed to install the <command>ip</command> utility now.
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| 72 | Just bring up the loopback interface:</para>
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| 73 |
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| 74 | <screen><userinput remap="install">ip/ip link set lo up</userinput></screen>
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| 75 |
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| 76 | <para>Verify the result:</para>
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| 77 |
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| 78 | <screen><userinput remap="install">ip/ip addr</userinput></screen>
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| 79 |
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| 80 | <para>The command above should show <literal>127.0.0.1/8</literal>
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| 81 | as the IPv4 address of <literal>lo</literal>, and
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| 82 | <literal>::1/128</literal> as the IPv6 address.</para>
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| 83 |
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| 84 | </sect2>
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| 85 |
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| 86 | <sect2 role="content">
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| 87 | <title/>
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| 88 |
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| 89 | <para>Details on this package are located in <xref linkend="contents-iproute2" role="."/></para>
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| 90 |
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| 91 | </sect2>
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| 92 |
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| 93 | </sect1>
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