diff --git a/tests/netlink_route.c b/tests/netlink_route.c
index 7946121d..0e5c2109 100644
--- a/tests/netlink_route.c
+++ b/tests/netlink_route.c
@@ -50,6 +50,48 @@ test_nlmsg_type(const int fd)
 	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
 }
 
+static void
+test_nlmsg_flags(const int fd)
+{
+	long rc;
+	struct nlmsghdr nlh = {
+		.nlmsg_len = sizeof(nlh),
+	};
+
+	nlh.nlmsg_type = RTM_GETLINK;
+	nlh.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=RTM_GETLINK"
+	       ", flags=NLM_F_REQUEST|NLM_F_DUMP, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = RTM_DELACTION;
+	nlh.nlmsg_flags = NLM_F_ROOT;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=RTM_DELACTION"
+	       ", flags=NLM_F_ROOT, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = RTM_NEWLINK;
+	nlh.nlmsg_flags = NLM_F_ECHO | NLM_F_REPLACE;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=RTM_NEWLINK"
+	       ", flags=NLM_F_ECHO|NLM_F_REPLACE, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = RTM_DELLINK;
+	nlh.nlmsg_flags = NLM_F_REPLACE;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=RTM_DELLINK"
+	       ", flags=%#x /* NLM_F_??? */, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, NLM_F_REPLACE,
+	       (unsigned) sizeof(nlh), sprintrc(rc));
+}
+
 int main(void)
 {
 	skip_if_unavailable("/proc/self/fd/");
@@ -57,6 +99,7 @@ int main(void)
 	int fd = create_nl_socket(NETLINK_ROUTE);
 
 	test_nlmsg_type(fd);
+	test_nlmsg_flags(fd);
 
 	printf("+++ exited with 0 +++\n");
 
diff --git a/tests/netlink_sock_diag.c b/tests/netlink_sock_diag.c
index 09eb2bfe..3fa0bb1f 100644
--- a/tests/netlink_sock_diag.c
+++ b/tests/netlink_sock_diag.c
@@ -55,6 +55,23 @@ test_nlmsg_type(const int fd)
 	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
 }
 
+static void
+test_nlmsg_flags(const int fd)
+{
+	long rc;
+	struct nlmsghdr nlh = {
+		.nlmsg_len = sizeof(nlh),
+		.nlmsg_type = SOCK_DIAG_BY_FAMILY,
+		.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP,
+	};
+
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=SOCK_DIAG_BY_FAMILY"
+	       ", flags=NLM_F_REQUEST|NLM_F_DUMP, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+}
+
 int main(void)
 {
 	skip_if_unavailable("/proc/self/fd/");
@@ -62,6 +79,7 @@ int main(void)
 	int fd = create_nl_socket(NETLINK_SOCK_DIAG);
 
 	test_nlmsg_type(fd);
+	test_nlmsg_flags(fd);
 
 	printf("+++ exited with 0 +++\n");
 
diff --git a/tests/netlink_xfrm.c b/tests/netlink_xfrm.c
index fa50080d..0a3963e0 100644
--- a/tests/netlink_xfrm.c
+++ b/tests/netlink_xfrm.c
@@ -51,6 +51,40 @@ test_nlmsg_type(const int fd)
 	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
 }
 
+static void
+test_nlmsg_flags(const int fd)
+{
+	long rc;
+	struct nlmsghdr nlh = {
+		.nlmsg_len = sizeof(nlh),
+	};
+
+	nlh.nlmsg_type = XFRM_MSG_GETSA;
+	nlh.nlmsg_flags = NLM_F_DUMP;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=XFRM_MSG_GETSA"
+	       ", flags=NLM_F_DUMP, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = XFRM_MSG_NEWSA;
+	nlh.nlmsg_flags = NLM_F_REPLACE;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=XFRM_MSG_NEWSA"
+	       ", flags=NLM_F_REPLACE, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc));
+
+	nlh.nlmsg_type = XFRM_MSG_DELSA;
+	nlh.nlmsg_flags = NLM_F_ECHO | NLM_F_REPLACE;
+	rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0);
+	printf("sendto(%d, {{len=%u, type=XFRM_MSG_DELSA"
+	       ", flags=NLM_F_ECHO|%#x, seq=0, pid=0}}"
+	       ", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
+	       fd, nlh.nlmsg_len, NLM_F_REPLACE,
+	       (unsigned) sizeof(nlh), sprintrc(rc));
+}
+
 int main(void)
 {
 	skip_if_unavailable("/proc/self/fd/");
@@ -58,6 +92,7 @@ int main(void)
 	int fd = create_nl_socket(NETLINK_XFRM);
 
 	test_nlmsg_type(fd);
+	test_nlmsg_flags(fd);
 
 	printf("+++ exited with 0 +++\n");