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Add caution regarding Address Varibles

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Signed-off-by: Tom Eastep <teastep@shorewall.net>
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Tom Eastep 2016-10-22 14:39:40 -07:00
parent 5b26f1939b
commit 9c749731c5
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1 changed files with 8 additions and 0 deletions
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docs/configuration_file_basics.xml
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@ -1654,6 +1654,14 @@ SSH(ACCEPT) net:$MYIP $FW
<section id="AddressVariables">
<title>Address Variables</title>
<caution>
<para>If you use address variables that refer to an optional interface,
the <command>enable</command> command will not change the rules that use
the variable. Therefore, to be completely safe, if you use such address
variables then you must follow an <command>enable</command> command with
a <command>reload</command> command.</para>
</caution>
<para>Given that shell variables are expanded at compile time, there is no
way to cause such variables to be expanded at run time. Prior to Shorewall
4.4.17, this made it difficult (to impossible) to include dynamic IP