diff --git a/src/tunnel.zig b/src/tunnel.zig
index 6fc6d69..1d1a2f3 100644
--- a/src/tunnel.zig
+++ b/src/tunnel.zig
@@ -2,12 +2,11 @@ const std = @import("std");
 const os = std.os;
 const mem = std.mem;
 const posix = std.posix;
-
 const log = std.log.scoped(.nyotun);
 
 const IFF_TUN = 0x0001; // <linux/if_tun.h>
 const IFF_NO_PI = 0x1000; // <linux/if_tun.h>
-const TUNSETIFF = 0x400454ca; // compile a C program, run and see
+const TUNSETIFF = 0x400454ca; // write a C program, run and see
 
 dev: [posix.IFNAMESIZE:0]u8,
 tunFile: posix.fd_t,
@@ -15,18 +14,15 @@ tunFile: posix.fd_t,
 pub fn init(devname: ?[]const u8) !Tunnel {
     const tunFile = try posix.open(
         "/dev/net/tun",
-        posix.O{
-            .ACCMODE = .RDWR,
-            .CLOEXEC = true,
-        },
+        posix.O{ .ACCMODE = .RDWR, .CLOEXEC = true },
         0,
     );
     errdefer posix.close(tunFile);
 
-    var ifr: posix.ifreq = undefined;
-    @memset(@as([*]u8, @ptrCast(&ifr))[0..@sizeOf(posix.ifreq)], 0);
-
-    ifr.ifru.flags = IFF_TUN | IFF_NO_PI;
+    var ifr = mem.zeroInit(
+        posix.ifreq,
+        .{ .ifru = .{ .flags = IFF_TUN | IFF_NO_PI } },
+    );
 
     if (devname) |name| {
         if (name.len >= posix.IFNAMESIZE - 1) return error.BadInterfaceName;
@@ -39,11 +35,7 @@ pub fn init(devname: ?[]const u8) !Tunnel {
         return error.OpenDevTun;
     }
 
-    var tunnel = Tunnel{
-        .dev = .{0} ** posix.IFNAMESIZE,
-        .tunFile = tunFile,
-    };
-
+    var tunnel = Tunnel{ .dev = .{0} ** posix.IFNAMESIZE, .tunFile = tunFile };
     const ifname = mem.sliceTo(&ifr.ifrn.name, 0);
     @memcpy(tunnel.dev[0..ifname.len], ifname);
     return tunnel;