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shorewall_code/Shorewall/configfiles/isusable

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#
# Shorewall version 4 - isusable File
#
# /etc/shorewall/isusable
#
# This script is called when Shorewall is attempting to determine
# if an interface named in /etc/shorewall/providers is usable.
#
# The script is invoked inside a function that accepts an interface
# name as a single argument. The file below is designed to work with
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# both swping and lsm as described at
# http://www.shorewall.net/MultiISP.html
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#
# See http://shorewall.net/shorewall_extension_scripts.htm for additional
# information.
#
###############################################################################
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local status
status=0
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[ -f ${VARDIR}/${1}.status ] && status=$(cat ${VARDIR}/${1}.status)
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return $status