first commit

etc_org/dhcp/debug

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+#
+# The purpose of this script is just to show the variables that are
+# available to all the scripts in this directory. All these scripts are
+# called from dhclient-script, which exports all the variables shown
+# before. If you want to debug a problem with your DHCP setup you can
+# enable this script and take a look at /tmp/dhclient-script.debug.
+
+# To enable this script set the following variable to "yes"
+RUN="no"
+
+if [ "$RUN" = "yes" ]; then
+	echo "$(date): entering ${1%/*}, dumping variables." \
+		>> /tmp/dhclient-script.debug
+
+	# loop over the 4 possible prefixes: (empty), cur_, new_, old_
+	for prefix in '' 'cur_' 'new_' 'old_'; do
+		# loop over the DHCP variables passed to dhclient-script
+		for basevar in reason interface medium alias_ip_address \
+			       ip_address host_name network_number subnet_mask \
+			       broadcast_address routers static_routes \
+			       rfc3442_classless_static_routes \
+			       domain_name domain_search domain_name_servers \
+			       netbios_name_servers netbios_scope \
+			       ntp_servers \
+			       ip6_address ip6_prefix ip6_prefixlen \
+			       dhcp6_domain_search dhcp6_name_servers ; do
+			var="${prefix}${basevar}"
+			eval "content=\$$var"
+
+			# show only variables with values set
+			if [ -n "${content}" ]; then
+				echo "$var='${content}'" >> /tmp/dhclient-script.debug
+			fi
+		done
+	done
+
+	echo '--------------------------' >> /tmp/dhclient-script.debug
+fi