diff --git a/Cargo.toml b/Cargo.toml
index c8bd57e..74b20e8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,6 @@ edition = "2018"
 [dependencies]
 byteorder = { version = "1.3.4", default-features = false }
 embedded-hal = "0.2.4"
-embedded-nal = { git = "https://github.com/rust-embedded-community/embedded-nal.git", rev = "0bc4d77" }
+embedded-nal = "0.3.0"
 bit_field = "0.10.1"
 nb = "1.0.0"
diff --git a/src/device.rs b/src/device.rs
index d840a22..f637036 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -74,10 +74,6 @@ impl<SpiBus: ActiveBus, HostImpl: Host> Device<SpiBus, HostImpl> {
         Ok(phy[0].into())
     }
 
-    pub fn into_interface(self) -> Interface<SpiBus, HostImpl> {
-        self.into()
-    }
-
     pub fn release_socket(&mut self, socket: Socket) {
         self.sockets.set_bit(socket.index.into(), true);
     }
diff --git a/src/interface.rs b/src/interface.rs
deleted file mode 100644
index 2b42de2..0000000
--- a/src/interface.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-use embedded_hal::digital::v2::OutputPin;
-use embedded_hal::spi::FullDuplex;
-use embedded_nal::Ipv4Addr;
-
-use crate::bus::{ActiveBus, ActiveFourWire, FourWire};
-use crate::device::Device;
-use crate::host::{Host, Manual};
-use crate::uninitialized_device::{InitializeError, UninitializedDevice};
-use crate::{MacAddress, Mode};
-
-pub struct Interface<SpiBus: ActiveBus, HostImpl: Host> {
-    pub device: Device<SpiBus, HostImpl>,
-}
-
-impl<SpiBus: ActiveBus, HostImpl: Host> Interface<SpiBus, HostImpl> {
-    fn new(device: Device<SpiBus, HostImpl>) -> Self {
-        Self { device }
-    }
-
-    pub fn release(self) -> Device<SpiBus, HostImpl> {
-        self.device
-    }
-}
-
-impl<Spi: FullDuplex<u8>, ChipSelect: OutputPin>
-    Interface<ActiveFourWire<Spi, ChipSelect>, Manual>
-{
-    pub fn setup(
-        spi: Spi,
-        cs: ChipSelect,
-        mac: MacAddress,
-        ip: Ipv4Addr,
-    ) -> Result<Self, InitializeError<<ActiveFourWire<Spi, ChipSelect> as ActiveBus>::Error>> {
-        Ok(UninitializedDevice::new(FourWire::new(cs).activate(spi))
-            .initialize_manual(mac, ip, Mode::default())?
-            .into_interface())
-    }
-}
-
-impl<SpiBus: ActiveBus, HostImpl: Host> From<Device<SpiBus, HostImpl>>
-    for Interface<SpiBus, HostImpl>
-{
-    fn from(device: Device<SpiBus, HostImpl>) -> Interface<SpiBus, HostImpl> {
-        Interface::<SpiBus, HostImpl>::new(device)
-    }
-}
diff --git a/src/lib.rs b/src/lib.rs
index eb7f44e..d4f0ba3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -74,13 +74,10 @@ pub mod bus;
 mod device;
 mod host;
 mod inactive_device;
-pub mod interface;
-mod network;
 pub mod net;
 pub mod register;
 mod socket;
 mod udp;
 pub mod uninitialized_device;
 
-pub use bus::ActiveFourWire;
-pub use interface::Interface;
+pub use net::MacAddress;
diff --git a/src/udp.rs b/src/udp.rs
index 346bcf1..37713c5 100644
--- a/src/udp.rs
+++ b/src/udp.rs
@@ -1,6 +1,6 @@
 use crate::bus::ActiveBus;
+use crate::device::Device;
 use crate::host::Host;
-use crate::interface::Interface;
 use crate::register::socketn;
 use crate::socket::Socket;
 use core::fmt::Debug;
@@ -178,7 +178,7 @@ impl<E: Debug> From<NbError<E>> for nb::Error<E> {
     }
 }
 
-impl<SpiBus, HostImpl> UdpClientStack for Interface<SpiBus, HostImpl>
+impl<SpiBus, HostImpl> UdpClientStack for Device<SpiBus, HostImpl>
 where
     SpiBus: ActiveBus,
     HostImpl: Host,
@@ -187,8 +187,7 @@ where
     type Error = UdpSocketError<SpiBus::Error>;
 
     fn socket(&mut self) -> Result<Self::UdpSocket, Self::Error> {
-        let mut device = &mut self.device;
-        if let Some(socket) = device.take_socket() {
+        if let Some(socket) = self.take_socket() {
             Ok(UdpSocket::new(socket))
         } else {
             Err(Self::Error::NoMoreSockets)
@@ -200,18 +199,17 @@ where
         socket: &mut Self::UdpSocket,
         remote: SocketAddr,
     ) -> Result<(), Self::Error> {
-        let mut device = &mut self.device;
         if let SocketAddr::V4(remote) = remote {
             // TODO find a random port
-            socket.open(&mut device.bus, 4000)?;
-            socket.set_destination(&mut device.bus, remote)?;
+            socket.open(&mut self.bus, 4000)?;
+            socket.set_destination(&mut self.bus, remote)?;
             Ok(())
         } else {
             Err(Self::Error::UnsupportedAddress)
         }
     }
     fn send(&mut self, socket: &mut Self::UdpSocket, buffer: &[u8]) -> nb::Result<(), Self::Error> {
-        socket.send(&mut self.device.bus, buffer)?;
+        socket.send(&mut self.bus, buffer)?;
         Ok(())
     }
     fn receive(
@@ -219,24 +217,22 @@ where
         socket: &mut Self::UdpSocket,
         buffer: &mut [u8],
     ) -> nb::Result<(usize, SocketAddr), Self::Error> {
-        Ok(socket.receive(&mut self.device.bus, buffer)?)
+        Ok(socket.receive(&mut self.bus, buffer)?)
     }
     fn close(&mut self, socket: Self::UdpSocket) -> Result<(), Self::Error> {
-        let mut device = &mut self.device;
-        socket.close(&mut device.bus)?;
-        device.release_socket(socket.socket);
+        socket.close(&mut self.bus)?;
+        self.release_socket(socket.socket);
         Ok(())
     }
 }
 
-impl<SpiBus, HostImpl> UdpFullStack for Interface<SpiBus, HostImpl>
+impl<SpiBus, HostImpl> UdpFullStack for Device<SpiBus, HostImpl>
 where
     SpiBus: ActiveBus,
     HostImpl: Host,
 {
     fn bind(&mut self, socket: &mut Self::UdpSocket, local_port: u16) -> Result<(), Self::Error> {
-        let mut device = &mut self.device;
-        socket.open(&mut device.bus, local_port)?;
+        socket.open(&mut self.bus, local_port)?;
         Ok(())
     }
     fn send_to(
@@ -246,7 +242,7 @@ where
         buffer: &[u8],
     ) -> nb::Result<(), Self::Error> {
         if let SocketAddr::V4(remote) = remote {
-            socket.send_to(&mut self.device.bus, remote, buffer)?;
+            socket.send_to(&mut self.bus, remote, buffer)?;
             Ok(())
         } else {
             Err(nb::Error::Other(Self::Error::UnsupportedAddress))