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>Appendix C. Upgrading <SPAN
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>C.6. Record network configuration</H1
><P
>If the machine does not use the Dynamic Host Configuration
Protocol then record the current network configuration. This is
used to complete the installer's <SPAN
CLASS="GUIMENU"
>Configure
TCP/IP</SPAN
> screen.</P
><DIV
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><A
NAME="RHL-IFCONFIG-IFCONFIG"
></A
><P
><B
>Example C-1. Displaying the Internet Protocol configuration</B
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><TT
CLASS="PROMPT"
>bash$</TT
> <B
CLASS="COMMAND"
>ifconfig eth0</B
>
<TT
CLASS="COMPUTEROUTPUT"
>eth0 Link encap:Ethernet HWaddr 00:11:22:33:44:55
inet addr:10.1.2.3 Bcast:10.1.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:344233 errors:0 dropped:0 overruns:0 frame:0
TX packets:285750 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
Interrupt:10 Base address:0x9000</TT
>
<TT
CLASS="PROMPT"
>bash$</TT
> <B
CLASS="COMMAND"
>netstat -r -n</B
> <A
NAME="RHL-IFCONFIG-IFCONFIG-IPADDR"
><IMG
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ALT="(1)"></A
>
<TT
CLASS="COMPUTEROUTPUT"
>Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.1.2.0 0.0.0.0 255.255.255.0 U 40 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 40 0 0 lo
0.0.0.0 10.1.2.254 0.0.0.0 UG 40 0 0 eth0</TT
>
<TT
CLASS="PROMPT"
>bash$</TT
> <B
CLASS="COMMAND"
>cat /etc/resolv.conf</B
>
<TT
CLASS="COMPUTEROUTPUT"
>domain example.edu.au
nameserver 10.255.1.1
nameserver 10.255.2.1
nameserver 172.16.1.1</TT
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><A
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></DT
><DD
>The value of <TT
CLASS="LITERAL"
>inet addr</TT
> is the
<SPAN
CLASS="QUOTE"
>"IP address"</SPAN
>. Our example shows
<TT
CLASS="LITERAL"
>10.1.2.3</TT
>. The value of
<TT
CLASS="LITERAL"
>Mask</TT
> is the <SPAN
CLASS="QUOTE"
>"Netmask"</SPAN
>. Our
example shows <TT
CLASS="LITERAL"
>255.255.255.0</TT
>.</DD
><DT
><A
HREF="rhl-ifconfig.html#RHL-IFCONFIG-IFCONFIG-ROUTER"
><IMG
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></DT
><DD
>The value in the Gateway column for Destination
<TT
CLASS="LITERAL"
>0.0.0.0</TT
> is the <SPAN
CLASS="QUOTE"
>"Default
gateway"</SPAN
>. Our example shows
<TT
CLASS="LITERAL"
>10.1.2.254</TT
>.</DD
><DT
><A
HREF="rhl-ifconfig.html#RHL-IFCONFIG-IFCONFIG-DNS"
><IMG
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></DT
><DD
>The value of the first listed
<TT
CLASS="LITERAL"
>nameserver</TT
> is the <SPAN
CLASS="QUOTE"
>"Primary
nameserver"</SPAN
>. Our example shows
<TT
CLASS="LITERAL"
>10.255.1.1</TT
>.</DD
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