diff --git a/include/haproxy/sock_inet.h b/include/haproxy/sock_inet.h
index 8b1de095a..48b23b3fd 100644
--- a/include/haproxy/sock_inet.h
+++ b/include/haproxy/sock_inet.h
@@ -30,5 +30,6 @@
 int sock_inet4_addrcmp(const struct sockaddr_storage *a, const struct sockaddr_storage *b);
 int sock_inet6_addrcmp(const struct sockaddr_storage *a, const struct sockaddr_storage *b);
 int sock_inet_get_dst(int fd, struct sockaddr *sa, socklen_t salen, int dir);
+int sock_inet_is_foreign(int fd, sa_family_t family);
 
 #endif /* _HAPROXY_SOCK_INET_H */
diff --git a/src/haproxy.c b/src/haproxy.c
index 03a05cdd4..3744547d2 100644
--- a/src/haproxy.c
+++ b/src/haproxy.c
@@ -117,6 +117,7 @@
 #include <haproxy/server.h>
 #include <haproxy/session.h>
 #include <haproxy/signal.h>
+#include <haproxy/sock_inet.h>
 #include <haproxy/ssl_sock.h>
 #include <haproxy/stream.h>
 #include <haproxy/task.h>
@@ -1306,7 +1307,7 @@ static int get_old_sockets(const char *unixsocket)
 		curoff += sizeof(int);
 
 		/* determine the foreign status directly from the socket itself */
-		if (tcp_is_foreign(fd, xfer_sock->addr.ss_family))
+		if (sock_inet_is_foreign(fd, xfer_sock->addr.ss_family))
 			xfer_sock->options |= LI_O_FOREIGN;
 
 		/* keep only the v6only flag depending on what's currently
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index 675c686ee..fba60834b 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -581,65 +581,6 @@ int tcp_connect_server(struct connection *conn, int flags)
 	return SF_ERR_NONE;  /* connection is OK */
 }
 
-/* Returns true if the passed FD corresponds to a socket bound with LI_O_FOREIGN
- * according to the various supported socket options. The socket's address family
- * must be passed in <family>.
- */
-int tcp_is_foreign(int fd, sa_family_t family)
-{
-	int val __maybe_unused;
-	socklen_t len __maybe_unused;
-
-	switch (family) {
-	case AF_INET:
-#if defined(IP_TRANSPARENT)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_IP, IP_TRANSPARENT, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(IP_FREEBIND)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_IP, IP_FREEBIND, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(IP_BINDANY)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, IPPROTO_IP, IP_BINDANY, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(SO_BINDANY)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_SOCKET, SO_BINDANY, &val, &len) == 0 && val)
-			return 1;
-#endif
-		break;
-
-	case AF_INET6:
-#if defined(IPV6_TRANSPARENT) && defined(SOL_IPV6)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(IP_FREEBIND)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_IP, IP_FREEBIND, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(IPV6_BINDANY)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, IPPROTO_IPV6, IPV6_BINDANY, &val, &len) == 0 && val)
-			return 1;
-#endif
-#if defined(SO_BINDANY)
-		val = 0; len = sizeof(val);
-		if (getsockopt(fd, SOL_SOCKET, SO_BINDANY, &val, &len) == 0 && val)
-			return 1;
-#endif
-		break;
-	}
-	return 0;
-}
-
 /* sets the v6only_default flag according to the OS' default settings; for
  * simplicity it's set to zero if not supported.
  */
diff --git a/src/sock_inet.c b/src/sock_inet.c
index b82a920ad..db1a8c00e 100644
--- a/src/sock_inet.c
+++ b/src/sock_inet.c
@@ -106,3 +106,62 @@ int sock_inet_get_dst(int fd, struct sockaddr *sa, socklen_t salen, int dir)
 		return ret;
 	}
 }
+
+/* Returns true if the passed FD corresponds to a socket bound with LI_O_FOREIGN
+ * according to the various supported socket options. The socket's address family
+ * must be passed in <family>.
+ */
+int sock_inet_is_foreign(int fd, sa_family_t family)
+{
+	int val __maybe_unused;
+	socklen_t len __maybe_unused;
+
+	switch (family) {
+	case AF_INET:
+#if defined(IP_TRANSPARENT)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_IP, IP_TRANSPARENT, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(IP_FREEBIND)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_IP, IP_FREEBIND, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(IP_BINDANY)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, IPPROTO_IP, IP_BINDANY, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(SO_BINDANY)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_SOCKET, SO_BINDANY, &val, &len) == 0 && val)
+			return 1;
+#endif
+		break;
+
+	case AF_INET6:
+#if defined(IPV6_TRANSPARENT) && defined(SOL_IPV6)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_IPV6, IPV6_TRANSPARENT, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(IP_FREEBIND)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_IP, IP_FREEBIND, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(IPV6_BINDANY)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, IPPROTO_IPV6, IPV6_BINDANY, &val, &len) == 0 && val)
+			return 1;
+#endif
+#if defined(SO_BINDANY)
+		val = 0; len = sizeof(val);
+		if (getsockopt(fd, SOL_SOCKET, SO_BINDANY, &val, &len) == 0 && val)
+			return 1;
+#endif
+		break;
+	}
+	return 0;
+}