diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index d872ed3..e59aa96 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -774,6 +774,12 @@
 	const struct sockaddr sa = { .sa_family = AF_UNSPEC };
 	int ret;
 
+	/* we never do that with a shared FD otherwise we'd break it in the
+	 * parent process and any possible subsequent worker inheriting it.
+	 */
+	if (rx->flags & RX_F_INHERITED)
+		return -1;
+
 	if (connect(rx->fd, &sa, sizeof(sa)) < 0)
 		goto check_already_done;
 
diff --git a/src/proto_udp.c b/src/proto_udp.c
index bebcfb3..0724680 100644
--- a/src/proto_udp.c
+++ b/src/proto_udp.c
@@ -206,6 +206,12 @@
 	if (rx->fd < 0)
 		return 0;
 
+	/* we never do that with a shared FD otherwise we'd break it in the
+	 * parent process and any possible subsequent worker inheriting it.
+	 */
+	if (rx->flags & RX_F_INHERITED)
+		return -1;
+
 	if (getsockname(rx->fd, (struct sockaddr *)&ss, &len) < 0)
 		return -1;