Simplify start section in run command script

arpd/rc.arpd

@@ -5,13 +5,12 @@
 
 %config
     arpd_enable="$openpkg_rc_def"
-    arpd_interface=""
-    arpd_listen=""
     arpd_log_prolog="true"
     arpd_log_epilog="true"
     arpd_log_numfiles="10"
     arpd_log_minsize="1M"
     arpd_log_complevel="9"
+    arpd_ip_network="127.0.0.0/24"
 
 %common
     arpd_pidfile="@l_prefix@/var/arpd/arpd.pid"
@@ -31,14 +30,7 @@
 %start -u @l_susr@
     rcService arpd enable yes || exit 0
     rcService arpd active yes && exit 0
-    opts=""
-    if [ ".$arpd_interface" != . ]; then
-        opts="$opts -i $arpd_interface"
-    fi
-    if [ ".$arpd_listen" != . ]; then
-        opts="$opts $arpd_listen"
-    fi
-    @l_prefix@/sbin/arpd $opts >/dev/null 2>&1
+    @l_prefix@/sbin/arpd $arpd_ip_network >/dev/null 2>&1
 
 %stop -u @l_susr@
     rcService arpd enable yes || exit 0