diff --git a/daemon/utility.c b/daemon/utility.c
new file mode 100644
index 0000000..1b36a24
--- /dev/null
+++ b/daemon/utility.c
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#include <unistd.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <assert.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <netdb.h>
+
+#include "internal.h"
+
+/***********************************************************************
+ * Utility
+ ***********************************************************************/
+
+bool sockaddr_equals(const struct sockaddr *a, const struct sockaddr *b)
+{
+	const struct sockaddr_in *a4, *b4;
+	const struct sockaddr_in6 *a6, *b6;
+
+	if (a->sa_family != b->sa_family)
+		return false;
+
+	switch (a->sa_family) {
+	case AF_INET:
+		a4 = (struct sockaddr_in *) a;
+		b4 = (struct sockaddr_in *) b;
+		if (a4->sin_port != b4->sin_port)
+			return false;
+		if (a4->sin_addr.s_addr != b4->sin_addr.s_addr)
+			return false;
+		break;
+	case AF_INET6:
+		a6 = (struct sockaddr_in6 *) a;
+		b6 = (struct sockaddr_in6 *) b;
+		if (a6->sin6_port != b6->sin6_port)
+			return false;
+		if (memcmp(a6->sin6_addr.s6_addr, b6->sin6_addr.s6_addr, sizeof(b6->sin6_addr.s6_addr)))
+			return false;
+		break;
+	default:
+		assert(false);
+	}
+
+	return true;
+}
+
+struct addrinfo *addrinfo_helper(uint16_t family, uint16_t type, uint8_t proto,
+				 const char *host, uint16_t port, bool passive)
+{
+	struct addrinfo hints, *result;
+	char portbuf[6];
+	int rc;
+
+	snprintf(portbuf, sizeof(portbuf), "%u", port);
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = family;
+	hints.ai_socktype = type;
+	hints.ai_protocol = proto;
+	if (passive)
+		hints.ai_flags |= AI_PASSIVE;
+
+	rc = getaddrinfo(host, portbuf, &hints, &result);
+	if (rc != 0)
+		return NULL;
+
+	return result;
+}