diff --git a/dhcpd/src/main.rs b/dhcpd/src/main.rs
index a95b703e..45b7eab2 100644
--- a/dhcpd/src/main.rs
+++ b/dhcpd/src/main.rs
@@ -446,19 +446,36 @@ fn dhcp(iface: &str, verbose: bool) -> Result<(), String> {
     Ok(())
 }
 
+fn auto_detect_iface() -> String {
+    if let Ok(dir) = std::fs::read_dir("/scheme/netcfg/ifaces") {
+        for entry in dir.flatten() {
+            if let Ok(name) = entry.file_name().into_string() {
+                if !name.is_empty() && name != "." && name != ".." {
+                    return name;
+                }
+            }
+        }
+    }
+    String::from("eth0")
+}
+
 fn main() {
     let mut verbose = false;
-    let iface = "eth0";
+    let mut iface = String::new();
 
-    //TODO: parse iface from the args
     for arg in env::args().skip(1) {
         match arg.as_ref() {
             "-v" => verbose = true,
+            other if !other.starts_with('-') && iface.is_empty() => iface = other.to_string(),
             _ => (),
         }
     }
 
-    if let Err(err) = dhcp(iface, verbose) {
+    if iface.is_empty() {
+        iface = auto_detect_iface();
+    }
+
+    if let Err(err) = dhcp(&iface, verbose) {
         eprintln!("dhcpd: {err}");
         process::exit(1);
     }