fix: Only connections from localhost are allowed

This is a breaking change as the return type of cluster.nodes has
changed, resulting in old templates potentially no longer working.

src/main.rs

@@ -120,7 +120,6 @@ async fn main() -> Result<(), Error> {
                 async move {
                     const IPXE_PATTERN: &str = "ipxe/";
                     if let Some(filename) = filename.strip_prefix(IPXE_PATTERN) {
-                        println!("Looking for iPXE binary: {filename}");
                         Some(IPXE_DIR.get_file(filename)?.contents().to_owned())
                     } else if let Some(caps) = re.captures(&filename) {
                         let cluster = &caps["cluster"];

src/tftp/server.rs

@@ -37,7 +37,7 @@ where
     F: Fn(&str) -> Fut,
     Fut: Future<Output = Option<Vec<u8>>>,
 {
-    let socket = UdpSocket::bind("127.0.0.1:0").await?;
+    let socket = UdpSocket::bind("0.0.0.0:0").await?;
     println!(
         "{src}: Connecting from {}",
         socket.local_addr().expect("Socket is bound")
@@ -85,7 +85,7 @@ where
     let mut timeout = 0;
 
     loop {
-        // Send the first byte
+        // Send the first chunk
         if let Some((index, chunk)) = chunk {
             Packet::data((index + 1) as u16, chunk)
                 .send_to(&socket, &src)
@@ -150,7 +150,7 @@ where
     F: Fn(&str) -> Fut + Clone + Send + 'static,
     Fut: Future<Output = Option<Vec<u8>>> + Send + 'static,
 {
-    let socket = UdpSocket::bind("127.0.0.1:69").await?;
+    let socket = UdpSocket::bind("0.0.0.0:69").await?;
 
     println!("Server started");
     loop {