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Add notes about find_first_interface_address_if_any()

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Tom Eastep 2009-09-05 08:59:45 -07:00
parent ec94ed638e
commit f126755a96
1 changed files with 18 additions and 0 deletions
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18
docs/FAQ.xml
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@ -683,6 +683,15 @@ DNAT loc loc:192.168.1.5 tcp www - <emph
<para>Using this technique, you will want to configure your <para>Using this technique, you will want to configure your
DHCP/PPPoE/PPTP/… client to automatically restart Shorewall each DHCP/PPPoE/PPTP/… client to automatically restart Shorewall each
time that you get a new IP address.</para> time that you get a new IP address.</para>
<note>
<para>For optional interfaces, use the function <emphasis
role="bold">find_first_interface_address_if_any()</emphasis>
rather than <emphasis
role="bold">find_first_interface_address()</emphasis>. The former
will return 0.0.0.0 if the interface has no configured IP address;
the latter terminates the calling program.</para>
</note>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
@ -802,6 +811,15 @@ DNAT loc dmz:192.168.2.4 tcp 80 - <emph
save</command> and <command>shorewall[-lite] save</command> and <command>shorewall[-lite]
restore</command></ulink>.</para> restore</command></ulink>.</para>
</warning> </warning>
<note>
<para>For optional interfaces, use the function <emphasis
role="bold">find_first_interface_address_if_any()</emphasis> rather
than <emphasis
role="bold">find_first_interface_address()</emphasis>. The former
will return 0.0.0.0 if the interface has no configured IP address;
the latter terminates the calling program.</para>
</note>
</section> </section>
<section id="faq2c"> <section id="faq2c">