diff --git a/embassy-rp/src/clocks.rs b/embassy-rp/src/clocks.rs
index 364cf452..6835ecad 100644
--- a/embassy-rp/src/clocks.rs
+++ b/embassy-rp/src/clocks.rs
@@ -115,7 +115,7 @@ pub unsafe fn init() {
     reset::unreset_wait(peris);
 }
 
-pub(crate) fn clk_sys_freq() -> u32 {
+pub(crate) fn _clk_sys_freq() -> u32 {
     125_000_000
 }
 
@@ -123,7 +123,7 @@ pub(crate) fn clk_peri_freq() -> u32 {
     125_000_000
 }
 
-pub(crate) fn clk_rtc_freq() -> u32 {
+pub(crate) fn _clk_rtc_freq() -> u32 {
     46875
 }
 
diff --git a/embassy/src/io/traits.rs b/embassy/src/io/traits.rs
index 6138adb4..b59cdc0d 100644
--- a/embassy/src/io/traits.rs
+++ b/embassy/src/io/traits.rs
@@ -31,11 +31,11 @@ pub trait AsyncBufRead {
     /// This function is a lower-level call. It needs to be paired with the
     /// [`consume`] method to function properly. When calling this
     /// method, none of the contents will be "read" in the sense that later
-    /// calling [`poll_read`] may return the same contents. As such, [`consume`] must
+    /// calling [`poll_fill_buf`] may return the same contents. As such, [`consume`] must
     /// be called with the number of bytes that are consumed from this buffer to
     /// ensure that the bytes are never returned twice.
     ///
-    /// [`poll_read`]: AsyncBufRead::poll_read
+    /// [`poll_fill_buf`]: AsyncBufRead::poll_fill_buf
     /// [`consume`]: AsyncBufRead::consume
     ///
     /// An empty buffer returned indicates that the stream has reached EOF.
@@ -49,7 +49,7 @@ pub trait AsyncBufRead {
     fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<&[u8]>>;
 
     /// Tells this buffer that `amt` bytes have been consumed from the buffer,
-    /// so they should no longer be returned in calls to [`poll_read`].
+    /// so they should no longer be returned in calls to [`poll_fill_buf`].
     ///
     /// This function is a lower-level call. It needs to be paired with the
     /// [`poll_fill_buf`] method to function properly. This function does
@@ -61,7 +61,6 @@ pub trait AsyncBufRead {
     /// The `amt` must be `<=` the number of bytes in the buffer returned by
     /// [`poll_fill_buf`].
     ///
-    /// [`poll_read`]: AsyncBufRead::poll_read
     /// [`poll_fill_buf`]: AsyncBufRead::poll_fill_buf
     fn consume(self: Pin<&mut Self>, amt: usize);
 }
diff --git a/examples/rp/src/bin/button.rs b/examples/rp/src/bin/button.rs
index 12bc0e0d..b0c3347f 100644
--- a/examples/rp/src/bin/button.rs
+++ b/examples/rp/src/bin/button.rs
@@ -12,7 +12,6 @@ mod example_common;
 use embassy::executor::Spawner;
 use embassy_rp::gpio::{Input, Level, Output, Pull};
 use embassy_rp::Peripherals;
-use embedded_hal::digital::v2::{InputPin, OutputPin};
 
 #[embassy::main]
 async fn main(_spawner: Spawner, p: Peripherals) {
diff --git a/examples/std/src/bin/net.rs b/examples/std/src/bin/net.rs
index 344a6e4d..73c8e149 100644
--- a/examples/std/src/bin/net.rs
+++ b/examples/std/src/bin/net.rs
@@ -18,7 +18,8 @@ mod tuntap;
 use crate::tuntap::TunTapDevice;
 
 static DEVICE: Forever<TunTapDevice> = Forever::new();
-static CONFIG: Forever<DhcpConfigurator> = Forever::new();
+static CONFIG_STATIC: Forever<StaticConfigurator> = Forever::new();
+static CONFIG_DYNAMIC: Forever<DhcpConfigurator> = Forever::new();
 static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
 
 #[derive(Clap)]
@@ -28,6 +29,9 @@ struct Opts {
     /// TAP device name
     #[clap(long, default_value = "tap0")]
     tap: String,
+    /// use a static IP instead of DHCP
+    #[clap(long)]
+    static_ip: bool,
 }
 
 #[embassy::task]
@@ -42,20 +46,21 @@ async fn main_task(spawner: Spawner) {
     // Init network device
     let device = TunTapDevice::new(&opts.tap).unwrap();
 
-    // Static IP configuration
-    let config = StaticConfigurator::new(Config {
-        address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
-        dns_servers: Vec::new(),
-        gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
-    });
-
-    // DHCP configruation
-    let config = DhcpConfigurator::new();
+    // Choose between dhcp or static ip
+    let config: &'static mut dyn Configurator = if opts.static_ip {
+        CONFIG_STATIC.put(StaticConfigurator::new(Config {
+            address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 69, 2), 24),
+            dns_servers: Vec::new(),
+            gateway: Some(Ipv4Address::new(192, 168, 69, 1)),
+        }))
+    } else {
+        CONFIG_DYNAMIC.put(DhcpConfigurator::new())
+    };
 
     let net_resources = StackResources::new();
 
     // Init network stack
-    embassy_net::init(DEVICE.put(device), CONFIG.put(config), NET_RESOURCES.put(net_resources));
+    embassy_net::init(DEVICE.put(device), config, NET_RESOURCES.put(net_resources));
 
     // Launch network task
     spawner.spawn(net_task()).unwrap();
diff --git a/examples/std/src/tuntap.rs b/examples/std/src/tuntap.rs
index dd453deb..53d3afd5 100644
--- a/examples/std/src/tuntap.rs
+++ b/examples/std/src/tuntap.rs
@@ -7,10 +7,10 @@ use std::io::{Read, Write};
 use std::os::unix::io::{AsRawFd, RawFd};
 
 pub const SIOCGIFMTU: libc::c_ulong = 0x8921;
-pub const SIOCGIFINDEX: libc::c_ulong = 0x8933;
-pub const ETH_P_ALL: libc::c_short = 0x0003;
+pub const _SIOCGIFINDEX: libc::c_ulong = 0x8933;
+pub const _ETH_P_ALL: libc::c_short = 0x0003;
 pub const TUNSETIFF: libc::c_ulong = 0x400454CA;
-pub const IFF_TUN: libc::c_int = 0x0001;
+pub const _IFF_TUN: libc::c_int = 0x0001;
 pub const IFF_TAP: libc::c_int = 0x0002;
 pub const IFF_NO_PI: libc::c_int = 0x1000;