diff --git a/tests/conntrack/test-conntrack.c b/tests/conntrack/test-conntrack.c
index 76ab051..372e025 100644
--- a/tests/conntrack/test-conntrack.c
+++ b/tests/conntrack/test-conntrack.c
@@ -28,6 +28,23 @@ int main()
 	struct dirent *dent;
 	char file[1024];
 	int i,n;
+	char cmd_buf[1024 * 8];
+	int i_cmd_buf = 0;
+	char cmd, cur_cmd = 0;
+	char *cmd_opt;
+
+#define cmd_strappend(_s) do { \
+	char * pos = stpncpy(cmd_buf + i_cmd_buf, _s, sizeof(cmd_buf) - i_cmd_buf); \
+	i_cmd_buf = pos - cmd_buf; \
+	if (i_cmd_buf == sizeof(cmd_buf)) { \
+		printf("buffer full!\n"); \
+		exit(EXIT_FAILURE); \
+	} \
+} while (0)
+
+#define cmd_reset() do { \
+		i_cmd_buf = 0; \
+} while (0)
 
 	n = scandir("testsuite", &dents, NULL, alphasort);
 
@@ -48,9 +65,7 @@ int main()
 		}
 
 		while (fgets(buf, sizeof(buf), fp)) {
-			char tmp[1024] = CT_PROG, *res;
-			tmp[strlen(CT_PROG)] = ' ';
-
+			char *res;
 			line++;
 
 			if (buf[0] == '#' || buf[0] == ' ')
@@ -63,27 +78,72 @@ int main()
 				exit(EXIT_FAILURE);
 			}
 			*res = '\0';
-			res+=2;
+			res++;
+			for (; *res == ' ' || *res == '\t'; res++);
+			cmd = res[0];
+			cmd_opt = &res[1];
+			for (; *cmd_opt == ' ' || *cmd_opt == '\t'; cmd_opt++);
+			res = strchr(cmd_opt, '\n');
+			if (res)
+				*res = '\0';
+
+			if (cur_cmd && cmd != cur_cmd) {
+				/* complete current multi-line command */
+				switch (cur_cmd) {
+				case '\n':
+					cmd_strappend("\" | ");
+					break;
+				default:
+					printf("Internal Error: unexpected multiline command %c",
+							cur_cmd);
+					exit(EXIT_FAILURE);
+					break;
+				}
+
+				cur_cmd = 0;
+			}
+
+			switch (cmd) {
+			case '\n':
+				if (!cur_cmd) {
+					cmd_strappend("echo \"");
+					cur_cmd = cmd;
+				} else
+					cmd_strappend("\n");
+				cmd_strappend(buf);
+				continue;
+			default:
+				cmd_strappend(CT_PROG);
+				cmd_strappend(" ");
+				cmd_strappend(buf);
+				if (cmd == '|') {
+					cmd_strappend(" | ");
+					if (cmd_opt[0]) {
+						cmd_strappend("sed \"");
+						cmd_strappend(cmd_opt);
+						cmd_strappend("\" | ");
+					}
+					continue;
+				}
+				cmd_reset();
+				break;
+			}
 
-			strcpy(tmp + strlen(CT_PROG) + 1, buf);
-			printf("(%d) Executing: %s\n", line, tmp);
+			printf("(%d) Executing: %s\n", line, cmd_buf);
 
 			fflush(stdout);
-			ret = system(tmp);
+			ret = system(cmd_buf);
 
 			if (WIFEXITED(ret) &&
 			    WEXITSTATUS(ret) == EXIT_SUCCESS) {
-			    	if (res[0] == 'O' &&
-				    res[1] == 'K')
+				if (cmd == 'O')
 					ok++;
 				else {
 					bad++;
 					printf("^----- BAD\n");
 				}
 			} else {
-				if (res[0] == 'B' &&
-				    res[1] == 'A' &&
-				    res[2] == 'D')
+				if (cmd == 'B')
 					ok++;
 				else {
 					bad++;
diff --git a/tests/conntrack/testsuite/08stdin b/tests/conntrack/testsuite/08stdin
new file mode 100644
index 0000000..38f3b8b
--- /dev/null
+++ b/tests/conntrack/testsuite/08stdin
@@ -0,0 +1,80 @@
+# create
+# create a conntrack
+-I -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create from reply
+-I -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create a v6 conntrack
+-I -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# creae icmp ping request entry
+-I -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+-R - ; OK
+# create again
+-I -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; BAD
+# make sure create again with stdio mode fails as well
+-I -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+-R - ; BAD
+-I -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ;
+-R - ; BAD
+# empty lines are ignored
+;
+-I -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+-R - ; BAD
+# spaces or tabs are ignored as well
+  ;
+		;
+-I -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+-R - ; BAD
+# delete
+-D -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ;
+# empty lines should be just ignored
+;
+;
+# delete reverse
+-D -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ;
+# empty lines with spaces or tabs should be ignored as well
+ ;
+	;
+		;
+  ;
+	    ;
+	    	    	;
+# delete v6 conntrack
+-D -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ;
+# delete icmp ping request entry
+-D -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+;
+;
+-R - ; OK
+# create again - should succeed now
+-I -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; OK
+-I -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ; OK
+-I -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; OK
+-I -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; OK
+# delete again (for cleanup)
+-D -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ;
+-D -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ;
+-D -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ;
+-D -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+;
+-R - ; OK
+# delete no entries - should return err
+-D -w 123 ; BAD
+# delete no entries via stdin - should return err as well
+-D -w 123 ;
+-R - ; BAD
+# delete no entries in parallel with adding entries via stdin - should succeed
+# -D and -I should work in parallel
+-D -w 123 ;
+-I -w 123 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+-R - ; OK
+# now deleting entries should return success
+-D -w 123 ;
+-R - ; OK
+# should fail again
+-D -w 123 ;
+-R - ; BAD
+# validate it via standard command line way
+-D -w 123 ; BAD
\ No newline at end of file
diff --git a/tests/conntrack/testsuite/09dumpopt b/tests/conntrack/testsuite/09dumpopt
new file mode 100644
index 0000000..0d5d9d4
--- /dev/null
+++ b/tests/conntrack/testsuite/09dumpopt
@@ -0,0 +1,77 @@
+# test opts output for -L
+# create
+# create a conntrack
+-I -w 10 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create from reply
+-I -w 10 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create a v6 conntrack
+-I -w 10 -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# creae icmp ping request entry
+-I -w 10 -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+-R - ; OK
+# copy ipv4 bits to zone 11
+-L -w 10 -o save -f ipv4 ; |s/-w 10/-w 11/g
+-R - ; OK
+# copy ipv6 bits to zone 11
+-L -w 10 -o save -f ipv6 ; |s/-w 10/-w 11/g
+-R - ; OK
+# create again in zone 11
+-I -w 11 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; BAD
+# delete new entries
+-D -w 11 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete reverse
+-D -w 11 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ; OK
+# delete v6 conntrack
+-D -w 11-s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete icmp ping request entry
+-D -w 11 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; OK
+# delete old entries
+-D -w 10 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete reverse
+-D -w 10 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ; OK
+# delete v6 conntrack
+-D -w 10-s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete icmp ping request entry
+-D -w 10 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; OK
+#
+# now test opts output for -D
+# create entries again
+# create a conntrack
+-I -w 10 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create from reply
+-I -w 10 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ;
+# create a v6 conntrack
+-I -w 10 -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ;
+# creae icmp ping request entry
+-I -w 10 -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ;
+-R - ; OK
+# move ipv4 bits to zone 11
+-D -w 10 -o save -f ipv4 ; |s/-w 10/-w 11/g; s/-D /-I /g
+-R - ; OK
+# move ipv6 bits to zone 11
+-D -w 10 -o save -f ipv6 ; |s/-w 10/-w 11/g; s/-D /-I /g
+-R - ; OK
+# create again in zone 11
+-I -w 11 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 --state LISTEN -u SEEN_REPLY -t 50 ; BAD
+-I -w 11 -t 29 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; BAD
+# delete new entries
+-D -w 11 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete reverse
+-D -w 11 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ; OK
+# delete v6 conntrack
+-D -w 11-s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ; OK
+# delete icmp ping request entry
+-D -w 11 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; OK
+# delete old entries
+-D -w 10 -s 1.1.1.1 -d 2.2.2.2 -p tcp --sport 10 --dport 20 ; BAD
+# delete reverse
+-D -w 10 -r 2.2.2.2 -q 1.1.1.1 -p tcp --reply-port-src 11 --reply-port-dst 21 ; BAD
+# delete v6 conntrack
+-D -w 10-s 2001:DB8::1.1.1.1 -d 2001:DB8::2.2.2.2 -p tcp --sport 10 --dport 20 ; BAD
+# delete icmp ping request entry
+-D -w 10 -u SEEN_REPLY -s 1.1.1.1 -d 2.2.2.2 -r 2.2.2.2 -q 1.1.1.1 -p icmp --icmp-type 8 --icmp-code 0 --icmp-id 1226 ; BAD
\ No newline at end of file
