diff --git a/.cargo/config b/.cargo/config
deleted file mode 100644
index 93b20ab3..00000000
--- a/.cargo/config
+++ /dev/null
@@ -1,2 +0,0 @@
-[unstable]
-namespaced-features = true
\ No newline at end of file
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index f349f50a..219a5e36 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -21,4 +21,4 @@ jobs:
           target: thumbv7em-none-eabi
           override: true
       - name: Build
-        run: ./test-build.sh
+        run: ./ci.sh
diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 00000000..b0c62330
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,6 @@
+{
+    "editor.formatOnSave": true,
+    "rust-analyzer.procMacro.enable": true,
+    "rust-analyzer.cargo.loadOutDirsFromCheck": true,
+    "rust-analyzer.assist.importMergeBehavior": "last",
+}
\ No newline at end of file
diff --git a/Cargo.toml b/Cargo.toml
index 1b301282..7ab99c2e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,4 +45,5 @@ overflow-checks = false
 embassy = { git = "https://github.com/akiles/embassy" }
 embassy-std = { git = "https://github.com/akiles/embassy" }
 embassy-macros = { git = "https://github.com/akiles/embassy" }
+embassy-traits = { git = "https://github.com/akiles/embassy" }
 smoltcp = { git = "https://github.com/akiles/smoltcp" }
\ No newline at end of file
diff --git a/test-build.sh b/ci.sh
similarity index 92%
rename from test-build.sh
rename to ci.sh
index ec35f5da..385379de 100755
--- a/test-build.sh
+++ b/ci.sh
@@ -7,7 +7,7 @@ set -euxo pipefail
 
 # build for embedded
 (cd embassy-net; cargo build --target thumbv7em-none-eabi --features log)
-(cd embassy-net; cargo build --target thumbv7em-none-eabi --features defmt)
+(cd embassy-net; cargo build --target thumbv7em-none-eabi --features defmt,smoltcp/defmt)
 
 # build examples
 (cd embassy-net-examples; cargo build)
diff --git a/embassy-net-examples/src/main.rs b/embassy-net-examples/src/main.rs
index bc413f1a..dba1415b 100644
--- a/embassy-net-examples/src/main.rs
+++ b/embassy-net-examples/src/main.rs
@@ -1,8 +1,7 @@
 #![feature(type_alias_impl_trait)]
 
-use embassy::executor::{Spawner, task};
-use embassy::io::{AsyncBufReadExt, AsyncWriteExt};
-use embassy::time::{Duration, Timer};
+use embassy::executor::{task, Spawner};
+use embassy::io::AsyncWriteExt;
 use embassy::util::Forever;
 use embassy_net::*;
 use embassy_std::Executor;
diff --git a/embassy-net-examples/src/tuntap.rs b/embassy-net-examples/src/tuntap.rs
index 5c138c06..b2117e81 100644
--- a/embassy-net-examples/src/tuntap.rs
+++ b/embassy-net-examples/src/tuntap.rs
@@ -1,11 +1,11 @@
 use async_io::Async;
 use embassy::util::WakerRegistration;
 use libc;
+use log::*;
 use smoltcp::wire::EthernetFrame;
 use std::io;
 use std::io::{Read, Write};
 use std::os::unix::io::{AsRawFd, RawFd};
-use log::*;
 
 pub const SIOCGIFMTU: libc::c_ulong = 0x8921;
 pub const SIOCGIFINDEX: libc::c_ulong = 0x8933;
@@ -142,8 +142,8 @@ impl TunTapDevice {
     }
 }
 
-use embassy_net::{LinkState, DeviceCapabilities, Packet, PacketBox, PacketBuf};
 use core::task::Waker;
+use embassy_net::{DeviceCapabilities, LinkState, Packet, PacketBox, PacketBuf};
 
 impl crate::Device for TunTapDevice {
     fn is_transmit_ready(&mut self) -> bool {
@@ -197,4 +197,8 @@ impl crate::Device for TunTapDevice {
     fn link_state(&mut self) -> LinkState {
         LinkState::Up
     }
+
+    fn ethernet_address(&mut self) -> [u8; 6] {
+        [0x02, 0x03, 0x04, 0x05, 0x06, 0x07]
+    }
 }
diff --git a/embassy-net/Cargo.toml b/embassy-net/Cargo.toml
index 185992dd..de625018 100644
--- a/embassy-net/Cargo.toml
+++ b/embassy-net/Cargo.toml
@@ -11,11 +11,10 @@ defmt-debug = []
 defmt-info = []
 defmt-warn = []
 defmt-error = []
-defmt = [ "dep:defmt", "smoltcp/defmt" ]
 
 [dependencies]
 
-defmt = { version = "0.1.3", optional = true }
+defmt = { version = "0.2.0", optional = true }
 log = { version = "0.4.11", optional = true }
 
 embassy             = { version = "0.1.0" }
diff --git a/embassy-net/src/config/dhcp.rs b/embassy-net/src/config/dhcp.rs
index f5d598bd..0df67baf 100644
--- a/embassy-net/src/config/dhcp.rs
+++ b/embassy-net/src/config/dhcp.rs
@@ -1,13 +1,13 @@
 use embassy::util::Forever;
-use heapless::consts::*;
 use heapless::Vec;
 use smoltcp::dhcp::Dhcpv4Client;
 use smoltcp::socket::{RawPacketMetadata, RawSocketBuffer};
 use smoltcp::time::Instant;
-use smoltcp::wire::{Ipv4Address, Ipv4Cidr};
+use smoltcp::wire::Ipv4Address;
 
 use super::*;
-use crate::{device::LinkState, fmt::*};
+use crate::device::LinkState;
+use crate::fmt::*;
 use crate::{Interface, SocketSet};
 
 pub struct DhcpResources {
diff --git a/embassy-net/src/device.rs b/embassy-net/src/device.rs
index 5a266f4e..32b56e5b 100644
--- a/embassy-net/src/device.rs
+++ b/embassy-net/src/device.rs
@@ -1,11 +1,11 @@
-use core::task::{Poll, Waker};
+use core::task::Waker;
 use smoltcp::phy::Device as SmolDevice;
 use smoltcp::phy::DeviceCapabilities;
 use smoltcp::time::Instant as SmolInstant;
 
 use crate::fmt::*;
-use crate::{Packet, PacketBox, PacketBuf};
 use crate::Result;
+use crate::{Packet, PacketBox, PacketBuf};
 
 #[derive(PartialEq, Eq, Clone, Copy)]
 pub enum LinkState {
@@ -21,7 +21,7 @@ pub trait Device {
     fn register_waker(&mut self, waker: &Waker);
     fn capabilities(&mut self) -> DeviceCapabilities;
     fn link_state(&mut self) -> LinkState;
-    fn ethernet_address(&mut self) -> [u8;6];
+    fn ethernet_address(&mut self) -> [u8; 6];
 }
 
 pub struct DeviceAdapter {
@@ -92,7 +92,7 @@ pub struct TxToken<'a> {
 }
 
 impl<'a> smoltcp::phy::TxToken for TxToken<'a> {
-    fn consume<R, F>(mut self, _timestamp: SmolInstant, len: usize, f: F) -> Result<R>
+    fn consume<R, F>(self, _timestamp: SmolInstant, len: usize, f: F) -> Result<R>
     where
         F: FnOnce(&mut [u8]) -> Result<R>,
     {
diff --git a/embassy-net/src/stack.rs b/embassy-net/src/stack.rs
index 8f63db97..f8a945a5 100644
--- a/embassy-net/src/stack.rs
+++ b/embassy-net/src/stack.rs
@@ -1,7 +1,7 @@
+use core::cell::RefCell;
 use core::future::Future;
 use core::task::Context;
 use core::task::Poll;
-use core::{cell::RefCell, future};
 use embassy::time::{Instant, Timer};
 use embassy::util::ThreadModeMutex;
 use embassy::util::{Forever, WakerRegistration};
@@ -110,7 +110,7 @@ impl Stack {
         self.waker.register(cx.waker());
 
         let timestamp = instant_to_smoltcp(Instant::now());
-        if let Err(e) = self.iface.poll(&mut self.sockets, timestamp) {
+        if let Err(_) = self.iface.poll(&mut self.sockets, timestamp) {
             // If poll() returns error, it may not be done yet, so poll again later.
             cx.waker().wake_by_ref();
             return;
@@ -174,6 +174,9 @@ pub fn init(device: &'static mut dyn Device, configurator: &'static mut dyn Conf
 
     let sockets = SocketSet::new(&mut res.sockets[..]);
 
+    let local_port = LOCAL_PORT_MIN;
+
+    /*
     let local_port = loop {
         let mut res = [0u8; 2];
         embassy::rand::rand(&mut res);
@@ -182,6 +185,7 @@ pub fn init(device: &'static mut dyn Device, configurator: &'static mut dyn Conf
             break port;
         }
     };
+     */
 
     let stack = Stack {
         iface,
diff --git a/embassy-net/src/tcp_socket.rs b/embassy-net/src/tcp_socket.rs
index 84f09652..4f43bc61 100644
--- a/embassy-net/src/tcp_socket.rs
+++ b/embassy-net/src/tcp_socket.rs
@@ -111,7 +111,7 @@ impl<'a> TcpSocket<'a> {
     }
 }
 
-fn to_ioerr(e: Error) -> io::Error {
+fn to_ioerr(_err: Error) -> io::Error {
     // todo
     io::Error::Other
 }