diff --git a/configs/rpi-4-files/etc/init.d/irq-eth-pin b/configs/rpi-4-files/etc/init.d/irq-eth-pin
new file mode 100755
index 0000000..8bbb143
--- /dev/null
+++ b/configs/rpi-4-files/etc/init.d/irq-eth-pin
@@ -0,0 +1,36 @@
+#!/bin/sh /etc/rc.common
+
+uci_banirq=irqbalance.irqbalance.banirq
+cpu_irq_eth=2
+
+# Move eth0 IRQs to CPU1 (numbered 1-4 when writing)
+# And ban irqbalance from messing with it
+# The USB3 Ethernet IRQs cannot be moved and must stay on CPU0
+irqs_eth0=$(sed -rn "s/^\s*([0-9]+):.*eth0$/\1/p" /proc/interrupts)
+
+for n in ${irqs_eth0}; do
+    echo ${cpu_irq_eth} > /proc/irq/${n}/smp_affinity
+    if ! uci get ${uci_banirq} | grep -q ${n}; then
+        uci add_list ${uci_banirq}=${n}
+    fi
+done
+uci commit
+
+logger -t "irq_eth_pin" "Moved eth0 IRQs ${irqs_eth0} to cpu${cpu_irq_eth}"
+
+softirqs_move() {
+    # Move softirqs for network traffic to CPU2 and CPU3
+    # Maybe not a brilliant idea because the softirqs are probably better off
+    # being processed on the CPU that got the original IRQ
+    # (and that is exactly the default when the value is 0)
+    # NOTE: it appears that the openwrt 20.02-rc1 kernel has a bug that
+    # returns "No such file or directory" for /sys/class/net/eth1/queues/xps_cpus
+    for ifname in eth0; do # eth1
+        for f in $(find /sys/class/net/${ifname}/queues -name xps_cpus -o -name rps_cpus); do
+            if [ -f ${f} ]; then
+                echo "${f} = $(cat ${f})"
+                echo c >${f}
+            fi
+        done
+    done
+}
diff --git a/configs/rpi-4-files/etc/rc.d/S85irq-eth-pin b/configs/rpi-4-files/etc/rc.d/S85irq-eth-pin
new file mode 120000
index 0000000..d5fb68a
--- /dev/null
+++ b/configs/rpi-4-files/etc/rc.d/S85irq-eth-pin
@@ -0,0 +1 @@
+../init.d/irq-eth-pin
\ No newline at end of file