diff --git a/Formula/t/tinc.rb b/Formula/t/tinc.rb
index a1a7408eab437..214c13a8824d1 100644
--- a/Formula/t/tinc.rb
+++ b/Formula/t/tinc.rb
@@ -29,6 +29,9 @@ class Tinc < Formula
 
   uses_from_macos "zlib"
 
+  # fix build errors, upstream pr ref, https://github.com/gsliepen/tinc/pull/464
+  patch :DATA
+
   def install
     system "./configure", "--prefix=#{prefix}", "--sysconfdir=#{etc}",
                           "--with-openssl=#{Formula["openssl@3"].opt_prefix}"
@@ -52,3 +55,72 @@ def post_install
     assert_match version.to_s, shell_output("#{sbin}/tincd --version")
   end
 end
+
+__END__
+diff --git a/src/net_socket.c b/src/net_socket.c
+index 6195c16..e072970 100644
+--- a/src/net_socket.c
++++ b/src/net_socket.c
+@@ -102,14 +102,14 @@ static bool bind_to_interface(int sd) {
+
+ #if defined(SOL_SOCKET) && defined(SO_BINDTODEVICE)
+ 	memset(&ifr, 0, sizeof(ifr));
+-	strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
+-	ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
++	strncpy(ifr.ifr_name, iface, IFNAMSIZ);
++	ifr.ifr_name[IFNAMSIZ - 1] = 0;
+ 	free(iface);
+
+ 	status = setsockopt(sd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr));
+
+ 	if(status) {
+-		logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(errno));
++		logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_name, strerror(errno));
+ 		return false;
+ 	}
+
+@@ -157,13 +157,13 @@ int setup_listen_socket(const sockaddr_t *sa) {
+ 		struct ifreq ifr;
+
+ 		memset(&ifr, 0, sizeof(ifr));
+-		strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
+-		ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
++		strncpy(ifr.ifr_name, iface, IFNAMSIZ);
++		ifr.ifr_name[IFNAMSIZ - 1] = 0;
+ 		free(iface);
+
+ 		if(setsockopt(nfd, SOL_SOCKET, SO_BINDTODEVICE, (void *)&ifr, sizeof(ifr))) {
+ 			closesocket(nfd);
+-			logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(sockerrno));
++			logger(LOG_ERR, "Can't bind to interface %s: %s", ifr.ifr_name, strerror(sockerrno));
+ 			return -1;
+ 		}
+
+diff --git a/src/raw_socket_device.c b/src/raw_socket_device.c
+index f4ed694..cf13fe9 100644
+--- a/src/raw_socket_device.c
++++ b/src/raw_socket_device.c
+@@ -61,12 +61,12 @@ static bool setup_device(void) {
+ #endif
+
+ 	memset(&ifr, 0, sizeof(ifr));
+-	strncpy(ifr.ifr_ifrn.ifrn_name, iface, IFNAMSIZ);
+-	ifr.ifr_ifrn.ifrn_name[IFNAMSIZ - 1] = 0;
++	strncpy(ifr.ifr_name, iface, IFNAMSIZ);
++	ifr.ifr_name[IFNAMSIZ - 1] = 0;
+
+ 	if(ioctl(device_fd, SIOCGIFINDEX, &ifr)) {
+ 		close(device_fd);
+-		logger(LOG_ERR, "Can't find interface %s: %s", ifr.ifr_ifrn.ifrn_name, strerror(errno));
++		logger(LOG_ERR, "Can't find interface %s: %s", ifr.ifr_name, strerror(errno));
+ 		return false;
+ 	}
+
+@@ -76,7 +76,7 @@ static bool setup_device(void) {
+ 	sa.sll_ifindex = ifr.ifr_ifindex;
+
+ 	if(bind(device_fd, (struct sockaddr *) &sa, (socklen_t) sizeof(sa))) {
+-		logger(LOG_ERR, "Could not bind %s to %s: %s", device, ifr.ifr_ifrn.ifrn_name, strerror(errno));
++		logger(LOG_ERR, "Could not bind %s to %s: %s", device, ifr.ifr_name, strerror(errno));
+ 		return false;
+ 	}