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<!-- $Id$ -->
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<sect3 id="netcfg">
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<title>Configuring Network</title>
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<para>
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As you enter this step, if the system detects that you have more than
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one network device, you'll be asked to choose which device will be
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your <emphasis>primary</emphasis> network interface, i.e. the one
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which you want to use for installation. The other interfaces won't be
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configured at this time. You may configure additional interfaces after
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installation is complete; see the <citerefentry>
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<refentrytitle>interfaces</refentrytitle> <manvolnum>5</manvolnum>
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</citerefentry> man page.
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</para><para>
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By default, &d-i; tries to configure your computer's network
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automatically via DHCP. If the DHCP probe succeeds, you are done. If the
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probe fails, it may be caused by many factors ranging from unplugged
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network cable, to a misconfigured DHCP setup. Or maybe you don't have
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a DHCP server in your local network at all. For further explanation,
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check the error messages on the fourth console. In any case, you will
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be asked if you want to retry, or if you want to perform a manual
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setup. DHCP servers are sometimes really slow in their responses, so
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if you are sure everything is in place, try again.
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</para><para>
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The manual network setup in turn asks you a number of questions about
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your network, notably
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<computeroutput>IP address</computeroutput>,
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<computeroutput>Netmask</computeroutput>,
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<computeroutput>Gateway</computeroutput>,
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<computeroutput>Name server addresses</computeroutput>, and a
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<computeroutput>Hostname</computeroutput>.
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Moreover, if you have a wireless network interface, you will be asked
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to provide your <computeroutput>Wireless ESSID</computeroutput> and
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a <computeroutput>WEP key</computeroutput>. Fill in the answers from
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<xref linkend="needed-info"/>.
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</para><note><para>
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Some technical details you might, or might not, find handy: the
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program assumes the network IP address is the bitwise-AND of your
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system's IP address and your netmask. It will guess the broadcast
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address as the bitwise OR of your system's IP address with the bitwise
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negation of the netmask. It will also guess your gateway. If you
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can't find any of these answers, use the system's guesses — you
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can change them once the system has been installed, if necessary, by
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editing <filename>/etc/network/interfaces</filename>.
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</para></note>
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</sect3>
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