--- /usr/local/etc/rc.d/quagga.orig     2013-03-15 16:49:13.000000000 +0600
+++ /usr/local/etc/rc.d/quagga  2013-03-15 20:50:59.000000000 +0600
@@ -32,6 +32,20 @@

 start_postcmd=start_postcmd
 stop_postcmd=stop_postcmd
+configtest_cmd="check_config"
+extra_commands="configtest"
+
+check_config() {
+       echo Checking $daemon.conf
+       $command $daemon_flags -C
+       result=$?
+       if [ "$result" -eq "0" ]; then
+               echo OK
+       else
+               echo FAILED
+               exit
+       fi
+}

 start_postcmd()
 {
@@ -61,6 +75,9 @@
            command=/usr/local/sbin/${daemon}
            required_files=/usr/local/etc/quagga/${daemon}.conf
            pidfile=/var/run/quagga/${daemon}.pid
+           if [ ${quagga_cmd} = "restart" -o ${quagga_cmd} = "start" ]; then
+                       check_config
+           fi
            if [ ${quagga_cmd} = "start" -a ! -f ${required_files} ]; then
                        continue
            fi