rename '--class' into '--dscp-class' and '--set-class' into '--set-dscp-class'
in order not to waste the namespace
diff --git a/extensions/libipt_DSCP.c b/extensions/libipt_DSCP.c
index 1324663..f3bf079 100644
--- a/extensions/libipt_DSCP.c
+++ b/extensions/libipt_DSCP.c
@@ -33,8 +33,8 @@
 "  --set-dscp value		Set DSCP field in packet header to value\n"
 "  		                This value can be in decimal (ex: 32)\n"
 "               		or in hex (ex: 0x20)\n"
-"  --set-class class		Set the DSCP field in packet header to the value\n"
-"				represented by the DiffServ class value.\n"
+"  --set-dscp-class class	Set the DSCP field in packet header to the\n"
+"				value represented by the DiffServ class value.\n"
 "				This class may be EF,BE or any of the CSxx "
 "				or AFxx classes.\n"
 "\n"
@@ -44,7 +44,7 @@
 
 static struct option opts[] = {
 	{ "set-dscp", 1, 0, 'F' },
-	{ "set-class", 1, 0, 'G' },
+	{ "set-dscp-class", 1, 0, 'G' },
 	{ 0 }
 };
 
@@ -95,7 +95,7 @@
 	case 'G':
 		if (*flags)
 			exit_error(PARAMETER_PROBLEM,
-				   "DSCP target: Only use --set-class ONCE!");
+				   "DSCP target: Only use --set-dscp-class ONCE!");
 		parse_class(optarg, dinfo);
 		*flags = 1;
 		break;
diff --git a/extensions/libipt_dscp.c b/extensions/libipt_dscp.c
index 7718112..1d61da8 100644
--- a/extensions/libipt_dscp.c
+++ b/extensions/libipt_dscp.c
@@ -36,7 +36,7 @@
 "[!] --dscp value		Match DSCP codepoint with numerical value\n"
 "  		                This value can be in decimal (ex: 32)\n"
 "               		or in hex (ex: 0x20)\n"
-"[!] --class name		Match the DiffServ class. This value may\n"
+"[!] --dscp-class name		Match the DiffServ class. This value may\n"
 "				be any of the BE,EF, AFxx or CSx classes\n"
 "\n"
 "				These two options are mutually exclusive !\n"
@@ -46,7 +46,7 @@
 
 static struct option opts[] = {
 	{ "dscp", 1, 0, 'F' },
-	{ "class", 1, 0, 'G' },
+	{ "dscp-class", 1, 0, 'G' },
 	{ 0 }
 };
 
@@ -102,7 +102,7 @@
 	case 'G':
 		if (*flags)
 			exit_error(PARAMETER_PROBLEM,
-					"DSCP match: Only use --class ONCE!");
+					"DSCP match: Only use --dscp-class ONCE!");
 		check_inverse(optarg, &invert, &optind, 0);
 		parse_class(argv[optind - 1], dinfo);
 		if (invert)