BFO2LSDF [FIX]: output only IPv4 address

BFO2LSDF uses /bin/ip to check for an active VPN tunnel. It reports the IP
address to the system logger. /bin/ip reports the IPv4 and the IPv6 address,
which produced a line break in the output of the previous version of BFO2LSDF,
which in turn confused the log-file parser in csbackntfy. The current version
only outputs the IPv4 address.

BFO2LSDF.sh

@@ -32,6 +32,7 @@
 #     02/09/2016   V1.7   make program fit for bromo:
 #                         - support dry-run
 #                         - use openvpn instead of vpnc
+#     03/09/2016   V1.8   report only IPv4 address
 # 
 # ============================================================================
 #
@@ -93,8 +94,8 @@ do
   ${IP} addr show ${TUN_INTERFACE} > /dev/null 2>&1
   if [ $? -eq 0 ]
   then
-    tunIPs=$(${IP} addr show ${TUN_INTERFACE} | ${GREP} -e "inet" | \
-      awk '{print $2}')
+    tunIPs=$(${IP} addr show ${TUN_INTERFACE} | ${GREP} -e "inet " | \
+      head -n 1 | awk '{print $2}')
     ${LOGGER} -i -p user.info "${LOGINFO}  VPN connection already had been \
       established using IP ${tunIPs}."
   else
@@ -110,8 +111,8 @@ do
       ${IP} addr show ${TUN_INTERFACE} > /dev/null 2>&1
       if [ $? -eq 0 ]
       then
-        tunIPs=$(${IP} addr show ${TUN_INTERFACE} | ${GREP} -e "inet" | \
-          awk '{print $2}')
+        tunIPs=$(${IP} addr show ${TUN_INTERFACE} | ${GREP} -e "inet " | \
+          head -n 1 | awk '{print $2}')
         ${LOGGER} -i -p user.info "${LOGINFO}  VPN connection is \
           established using IP ${tunIPs}."
       else