diff --git a/embassy-net/Cargo.toml b/embassy-net/Cargo.toml
index 9214fd17..a2ef3b4f 100644
--- a/embassy-net/Cargo.toml
+++ b/embassy-net/Cargo.toml
@@ -51,7 +51,7 @@ atomic-polyfill = { version = "1.0" }
 [dependencies.smoltcp]
 version = "0.8.0"
 git = "https://github.com/smoltcp-rs/smoltcp"
-rev = "b7a7c4b1c56e8d4c2524c1e3a056c745a13cc09f"
+rev = "7b631c27cefe9b29e322a507c076b4156f477ee2"
 default-features = false
 features = [
   "proto-ipv4",
diff --git a/embassy-net/src/device.rs b/embassy-net/src/device.rs
index 44f7dc7b..d0c8a62d 100644
--- a/embassy-net/src/device.rs
+++ b/embassy-net/src/device.rs
@@ -2,6 +2,7 @@ use core::task::Context;
 
 use embassy_net_driver::{Capabilities, Checksum, Driver, Medium, RxToken, TxToken};
 use smoltcp::phy;
+use smoltcp::time::Instant;
 
 pub(crate) struct DriverAdapter<'d, 'c, T>
 where
@@ -19,14 +20,14 @@ where
     type RxToken<'a> = RxTokenAdapter<T::RxToken<'a>> where Self: 'a;
     type TxToken<'a> = TxTokenAdapter<T::TxToken<'a>> where Self: 'a;
 
-    fn receive(&mut self) -> Option<(Self::RxToken<'_>, Self::TxToken<'_>)> {
+    fn receive(&mut self, _timestamp: Instant) -> Option<(Self::RxToken<'_>, Self::TxToken<'_>)> {
         self.inner
             .receive(self.cx.as_deref_mut().unwrap())
             .map(|(rx, tx)| (RxTokenAdapter(rx), TxTokenAdapter(tx)))
     }
 
     /// Construct a transmit token.
-    fn transmit(&mut self) -> Option<Self::TxToken<'_>> {
+    fn transmit(&mut self, _timestamp: Instant) -> Option<Self::TxToken<'_>> {
         self.inner.transmit(self.cx.as_deref_mut().unwrap()).map(TxTokenAdapter)
     }
 
@@ -76,9 +77,9 @@ impl<T> phy::RxToken for RxTokenAdapter<T>
 where
     T: RxToken,
 {
-    fn consume<R, F>(self, _timestamp: smoltcp::time::Instant, f: F) -> smoltcp::Result<R>
+    fn consume<R, F>(self, f: F) -> R
     where
-        F: FnOnce(&mut [u8]) -> smoltcp::Result<R>,
+        F: FnOnce(&mut [u8]) -> R,
     {
         self.0.consume(|buf| f(buf))
     }
@@ -92,9 +93,9 @@ impl<T> phy::TxToken for TxTokenAdapter<T>
 where
     T: TxToken,
 {
-    fn consume<R, F>(self, _timestamp: smoltcp::time::Instant, len: usize, f: F) -> smoltcp::Result<R>
+    fn consume<R, F>(self, len: usize, f: F) -> R
     where
-        F: FnOnce(&mut [u8]) -> smoltcp::Result<R>,
+        F: FnOnce(&mut [u8]) -> R,
     {
         self.0.consume(len, |buf| f(buf))
     }
diff --git a/embassy-net/src/lib.rs b/embassy-net/src/lib.rs
index e4a4218e..757d3e27 100644
--- a/embassy-net/src/lib.rs
+++ b/embassy-net/src/lib.rs
@@ -23,11 +23,11 @@ use embassy_sync::waitqueue::WakerRegistration;
 use embassy_time::{Instant, Timer};
 use futures::pin_mut;
 use heapless::Vec;
+#[cfg(feature = "medium-ethernet")]
+use smoltcp::iface::Routes;
 #[cfg(feature = "dhcpv4")]
 use smoltcp::iface::SocketHandle;
 use smoltcp::iface::{Interface, InterfaceBuilder, SocketSet, SocketStorage};
-#[cfg(feature = "medium-ethernet")]
-use smoltcp::iface::{Neighbor, NeighborCache, Route, Routes};
 #[cfg(feature = "dhcpv4")]
 use smoltcp::socket::dhcpv4;
 // smoltcp reexports
@@ -45,25 +45,16 @@ use crate::device::DriverAdapter;
 const LOCAL_PORT_MIN: u16 = 1025;
 const LOCAL_PORT_MAX: u16 = 65535;
 
-pub struct StackResources<const ADDR: usize, const SOCK: usize, const NEIGHBOR: usize> {
-    addresses: [IpCidr; ADDR],
+pub struct StackResources<const SOCK: usize, const NEIGHBOR: usize> {
+    addresses: [IpCidr; 5],
     sockets: [SocketStorage<'static>; SOCK],
-
-    #[cfg(feature = "medium-ethernet")]
-    routes: [Option<(IpCidr, Route)>; 1],
-    #[cfg(feature = "medium-ethernet")]
-    neighbor_cache: [Option<(IpAddress, Neighbor)>; NEIGHBOR],
 }
 
-impl<const ADDR: usize, const SOCK: usize, const NEIGHBOR: usize> StackResources<ADDR, SOCK, NEIGHBOR> {
+impl<const SOCK: usize, const NEIGHBOR: usize> StackResources<SOCK, NEIGHBOR> {
     pub fn new() -> Self {
         Self {
-            addresses: [IpCidr::new(Ipv4Address::UNSPECIFIED.into(), 32); ADDR],
+            addresses: [IpCidr::new(Ipv4Address::UNSPECIFIED.into(), 32); 5],
             sockets: [SocketStorage::EMPTY; SOCK],
-            #[cfg(feature = "medium-ethernet")]
-            routes: [None; 1],
-            #[cfg(feature = "medium-ethernet")]
-            neighbor_cache: [None; NEIGHBOR],
         }
     }
 }
@@ -105,21 +96,20 @@ impl<D: Driver + 'static> Stack<D> {
     pub fn new<const ADDR: usize, const SOCK: usize, const NEIGH: usize>(
         mut device: D,
         config: ConfigStrategy,
-        resources: &'static mut StackResources<ADDR, SOCK, NEIGH>,
+        resources: &'static mut StackResources<SOCK, NEIGH>,
         random_seed: u64,
     ) -> Self {
         #[cfg(feature = "medium-ethernet")]
         let medium = device.capabilities().medium;
 
         let mut b = InterfaceBuilder::new();
-        b = b.ip_addrs(&mut resources.addresses[..]);
+        b = b.ip_addrs(Vec::<IpCidr, 5>::from_iter(resources.addresses));
         b = b.random_seed(random_seed);
 
         #[cfg(feature = "medium-ethernet")]
         if medium == Medium::Ethernet {
             b = b.hardware_addr(HardwareAddress::Ethernet(EthernetAddress(device.ethernet_address())));
-            b = b.neighbor_cache(NeighborCache::new(&mut resources.neighbor_cache[..]));
-            b = b.routes(Routes::new(&mut resources.routes[..]));
+            b = b.routes(Routes::new());
         }
 
         let iface = b.finalize(&mut DriverAdapter {
@@ -266,7 +256,7 @@ impl<D: Driver + 'static> Inner<D> {
             cx: Some(cx),
             inner: &mut self.device,
         };
-        if s.iface.poll(timestamp, &mut smoldev, &mut s.sockets).is_err() {
+        if !s.iface.poll(timestamp, &mut smoldev, &mut s.sockets) {
             // If poll() returns error, it may not be done yet, so poll again later.
             cx.waker().wake_by_ref();
             return;