From 6db4204bf09851370788fc4ba1b020151454a3d5 Mon Sep 17 00:00:00 2001
From: Robby Zambito <contact@robbyzambito.me>
Date: Tue, 20 Jan 2026 21:58:43 -0500
Subject: Set don't fragment, and use random id

---
 src/main.zig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

(limited to 'src/main.zig')

diff --git a/src/main.zig b/src/main.zig
index 5e8cabf..2175cf9 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -120,7 +120,7 @@ pub fn main(init: std.process.Init) !void {
             fragment_offset: u13 = 0,
             flags: packed struct(u3) {
                 reserved: u1 = 0,
-                dont_fragment: u1 = 0,
+                dont_fragment: u1 = 1,
                 more_fragments: u1 = 0,
             } = .{},
 
@@ -158,8 +158,8 @@ pub fn main(init: std.process.Init) !void {
     var headers: EthIpUdp = .{
         .src_mac = socket.mac,
         .ip = .{
-            .id = 0,
-            .src_addr = rand.int(u32),
+            .id = rand.int(u16),
+            .src_addr = 0, //rand.int(u32),
             .dst_addr = @bitCast([_]u8{ 255, 255, 255, 255 }),
             .len = undefined,
         },
@@ -231,6 +231,7 @@ pub fn main(init: std.process.Init) !void {
             var res = socket.receive(&res_buf) catch continue;
 
             headers.udp.dst_port = udp_dest_port;
+            headers.ip.id = rand.int(u16);
 
             full_msg = blk: {
                 var msg_buf: [2048]u8 = undefined;
@@ -272,6 +273,7 @@ pub fn main(init: std.process.Init) !void {
                 connection.connection.payload = cmd_output;
                 connection_bytes = connection.toBytes(&connection_buf);
                 headers.setPayloadLen(connection_bytes.len);
+                headers.ip.id = rand.int(u16);
 
                 full_msg = blk: {
                     var msg_buf: [2048]u8 = undefined;
-- 
cgit