diff --git a/test/zdtm.sh b/test/zdtm.sh
index b9645f433..fff4ba7e9 100644
--- a/test/zdtm.sh
+++ b/test/zdtm.sh
@@ -59,6 +59,7 @@ TEST_LIST="$TEST_LIST
 static/zombie00
 transition/fork
 static/file_fown
+static/socket-ext
 "
 
 MNT_TEST_LIST="
@@ -222,7 +223,7 @@ EOF
 	echo Dump $PID
 	mkdir -p $ddump
 	save_fds $PID  $ddump/dump.fd
-	setsid $CRTOOLS dump --evasive-devices -D $ddump -o dump.log -v 4 -t $PID $args $ARGS || {
+	setsid $CRTOOLS dump -x --evasive-devices -D $ddump -o dump.log -v 4 -t $PID $args $ARGS || {
 		echo WARNING: process $tname is left running for your debugging needs
 		return 1
 	}
@@ -246,7 +247,7 @@ EOF
 		done
 
 		echo Restore $PID
-		setsid $CRTOOLS restore --log-pid -D $ddump -o restore.log -v 4 -d -t $PID $args || return 2
+		setsid $CRTOOLS restore --log-pid -x -D $ddump -o restore.log -v 4 -d -t $PID $args || return 2
 
 		save_fds $PID  $ddump/restore.fd
 		diff_fds $ddump/dump.fd $ddump/restore.fd || return 2
diff --git a/test/zdtm/live/static/Makefile b/test/zdtm/live/static/Makefile
index 3c8d375f2..bffab9e8d 100644
--- a/test/zdtm/live/static/Makefile
+++ b/test/zdtm/live/static/Makefile
@@ -56,6 +56,7 @@ TST_NOFILE	=				\
 		mountpoints			\
 		netns				\
 		session01			\
+		socket-ext			\
 #		jobctl00			\
 
 TST_FILE	=				\
diff --git a/test/zdtm/live/static/socket-ext.c b/test/zdtm/live/static/socket-ext.c
new file mode 100644
index 000000000..6153ebd39
--- /dev/null
+++ b/test/zdtm/live/static/socket-ext.c
@@ -0,0 +1,100 @@
+
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/wait.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <fcntl.h>
+
+#include "zdtmtst.h"
+
+const char *test_doc	= "Test external sockets\n";
+const char *test_author	= "Andrey Vagin <avagin@openvz.org";
+
+#define SK_DATA "packet"
+
+int main(int argc, char *argv[])
+{
+	struct sockaddr_un addr;
+	unsigned int addrlen;
+	task_waiter_t lock;
+
+	char path[PATH_MAX] = "/tmp/zdtm.unix.sock.XXXXXX";
+	pid_t pid;
+	int ret, sk;
+
+	mktemp(path);
+	addr.sun_family = AF_UNIX;
+	strncpy(addr.sun_path, path, sizeof(addr.sun_path));
+	addrlen = sizeof(addr.sun_family) + strlen(path);
+
+	task_waiter_init(&lock);
+
+	pid = fork();
+	if (pid < 0) {
+		err("fork() failed");
+		return 1;
+	} else if (pid == 0) {
+		char c;
+		test_ext_init(argc, argv);
+
+		sk = socket(AF_UNIX, SOCK_DGRAM, 0);
+		if (sk < 0) {
+			err("Can't create socket");
+			return 1;
+		}
+		ret = bind(sk, &addr, addrlen);
+		if (ret < 0) {
+			err("Can't bind socket to %s", path);
+			return 1;
+		}
+		test_msg("The external socket %s\n", path);
+		task_waiter_complete(&lock, 1);
+		task_waiter_fini(&lock);
+
+		recv(sk, &c, sizeof(c), 0);
+
+		return 0;
+	}
+
+	test_init(argc, argv);
+
+	task_waiter_wait4(&lock, 1);
+	task_waiter_fini(&lock);
+
+	sk = socket(AF_UNIX, SOCK_DGRAM, 0);
+	if (sk < 0) {
+		err("Can't create socket");
+		return 1;
+	}
+
+	ret = connect(sk, &addr, addrlen);
+	if (ret < 0) {
+		err("Can't connect socket");
+		return 1;
+	}
+
+
+	test_daemon();
+	test_waitsig();
+
+	unlink(path);
+
+	ret = send(sk, "H", 1, 0);
+	if (ret != 1) {
+		err("Can't send a symbol");
+		fail();
+		return 1;
+	}
+
+	pass();
+	return 0;
+}