diff -ur ipvsadm-1.21/ipvsadm.c ipvsadm-1.21-ops/ipvsadm.c
--- ipvsadm-1.21/ipvsadm.c	2004-01-10 11:35:54.000000000 +0200
+++ ipvsadm-1.21-ops/ipvsadm.c	2004-03-31 01:13:39.367464584 +0300
@@ -166,7 +166,8 @@
 #define OPT_STATS	0x01000
 #define OPT_RATE	0x02000
 #define OPT_SORT	0x04000
-#define NUMBER_OF_OPT	15
+#define OPT_ONEPACKET	0x08000
+#define NUMBER_OF_OPT	16
 
 static const char* optnames[] = {
 	"numeric",
@@ -184,6 +185,7 @@
 	"stats",
 	"rate",
 	"sort",
+	"ops",
 };
 
 /*
@@ -359,6 +361,7 @@
 		{"stats", '\0', POPT_ARG_NONE, NULL, '7'},
 		{"rate", '\0', POPT_ARG_NONE, NULL, '8'},
 		{"sort", '\0', POPT_ARG_NONE, NULL, '9'},
+		{"ops", 'o', POPT_ARG_NONE, NULL, 'o'},
 		{NULL, 0, 0, NULL, 0}
 	};
 
@@ -456,7 +459,7 @@
 			break;
 		case 'p':
 			set_option(options, OPT_PERSISTENT);
-			ur->vs_flags = IP_VS_SVC_F_PERSISTENT;
+			ur->vs_flags |= IP_VS_SVC_F_PERSISTENT;
 			ur->timeout = parse_timeout(optarg, 1, MAX_TIMEOUT);
 			break;
 		case 'M':
@@ -526,6 +529,10 @@
 			set_option(options, OPT_SORT);
 			*format |= FMT_SORT;
 			break;
+		case 'o':
+			set_option(options, OPT_ONEPACKET);
+			ur->vs_flags |= IP_VS_SVC_F_ONEPACKET;
+			break;
 		default:
 			fail(2, "invalid option");
 		}
@@ -571,7 +578,7 @@
 	      int *cmd, unsigned int *options, unsigned int *format)
 {
 	int c, parse;
-	const char *optstring = "AEDCZSRaedlLhvt:u:f:s:M:p::w:r:gmicn";
+	const char *optstring = "AEDCZSRaedlLhvt:u:f:s:M:p::w:r:gmicno";
 	const struct option long_options[] = {
 		{"add-service", 0, 0, 'A'},
 		{"edit-service", 0, 0, 'E'},
@@ -608,6 +615,7 @@
 		{"stats", 0, 0, '7'},
 		{"rate", 0, 0, '8'},
 		{"sort", 0, 0, '9'},
+		{"ops", 0, 0, 'o'},
 		{"help", 0, 0, 'h'},
 		{0, 0, 0, 0}
 	};
@@ -725,7 +733,7 @@
 			break;
 		case 'p':
 			set_option(options, OPT_PERSISTENT);
-			ur->vs_flags = IP_VS_SVC_F_PERSISTENT;
+			ur->vs_flags |= IP_VS_SVC_F_PERSISTENT;
 			if (!optarg && optind < argc && argv[optind][0] != '-'
 			    && argv[optind][0] != '!')
 				optarg = argv[optind++];
@@ -798,6 +806,10 @@
 			set_option(options, OPT_SORT);
 			*format |= FMT_SORT;
 			break;
+		case 'o':
+			set_option(options, OPT_ONEPACKET);
+			ur->vs_flags |= IP_VS_SVC_F_ONEPACKET;
+			break;
 		default:
 			fail(2, "invalid option");
 		}
@@ -884,10 +896,15 @@
 		 * Make sure that port zero service is persistent
 		 */
 		if (!urule.vfwmark && !urule.vport &&
-		    (urule.vs_flags != IP_VS_SVC_F_PERSISTENT))
+		    !(urule.vs_flags & IP_VS_SVC_F_PERSISTENT))
 			fail(2, "Zero port specified "
 			     "for non-persistent service");
 
+		if (urule.vs_flags & IP_VS_SVC_F_ONEPACKET &&
+		    !urule.vfwmark && urule.protocol != IPPROTO_UDP)
+			fail(2, "One-Packet Scheduling is only "
+			     "for UDP virtual services");
+
 		/*
 		 * Set the default scheduling algorithm if not specified
 		 */
@@ -1187,6 +1204,7 @@
 		"  --stats                             output of statistics information\n"
 		"  --rate                              output of rate information\n"
 		"  --sort                              sorting output of service/server entries\n"
+		"  --ops          -o                   one-packet scheduling\n"
 		"  --numeric      -n                   numeric output of addresses and ports\n",
 		DEF_SCHED);
 
@@ -1482,6 +1500,9 @@
 				printf(" -M %s", inet_ntoa(mask));
 			}
 		}
+		if (svc->flags & IP_VS_SVC_F_ONEPACKET) {
+			printf(" ops");
+		}
 	} else if (format & FMT_STATS) {
 		printf("%-33s", svc_name);
 		print_largenum(svc->stats.conns);
@@ -1506,6 +1527,9 @@
 				printf(" mask %s", inet_ntoa(mask));
 			}
 		}
+		if (svc->flags & IP_VS_SVC_F_ONEPACKET) {
+			printf(" ops");
+ 		}
 	}
 	printf("\n");