vality check for segment / port fixed

ffs-set-segment/files/usr/sbin/ffs-set-segment

@@ -23,8 +23,8 @@ fi
 SEGINFO=${SEGINFO/Address 1: 2001:2:0:711::/}
 SEGMENT=$(echo $SEGINFO |cut -d' ' -f1 | cut -d':' -f2)
 let PORT=SEGMENT+10040
-if [ -z "$PORT" ]; then
-  logger -t $ME "No port"
+if [ $PORT -le 10040 ]; then
+  logger -t $ME "Invalid Segment"
   exit 1
 fi