From 883d57a3e734e5f2963a34ddd8b79d0fde7c0b01 Mon Sep 17 00:00:00 2001
From: nagumii <nagumi@gmail.com>
Date: Wed, 19 Feb 2025 13:24:32 +0200
Subject: [PATCH] Network failover

---
 .../rootfs_uclibc_rv1106/etc/network/interfaces  |  9 +++++++++
 .../usr/local/bin/femto-runonce.sh               | 16 ++++++++--------
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/etc/network/interfaces b/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/etc/network/interfaces
index 315112b..bfde602 100644
--- a/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/etc/network/interfaces
+++ b/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/etc/network/interfaces
@@ -8,4 +8,13 @@ iface lo inet loopback
 allow-hotplug wlan0
 iface wlan0 inet dhcp
     wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
+    metric 100
+    post-up sleep 5 && dhclient wlan0
+    pre-down ip route del default via $(ip route | awk '/default/ {print $3}') dev wlan0 metric 100
 
+
+allow-hotplug eth0
+iface eth0 inet dhcp
+    metric 10
+    post-up ip route replace default via $(ip route | awk '/default/ {print $3}') dev eth0 metric 10
+    pre-down ip route del default via $(ip route | awk '/default/ {print $3}') dev eth0 metric 10
diff --git a/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/usr/local/bin/femto-runonce.sh b/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/usr/local/bin/femto-runonce.sh
index 4ba57a2..8f6073b 100755
--- a/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/usr/local/bin/femto-runonce.sh
+++ b/foxbuntu/sysdrv/out/rootfs_uclibc_rv1106/usr/local/bin/femto-runonce.sh
@@ -70,16 +70,16 @@ fi
 
 # prevent randomized mac address for eth0. If `eth0`` is already present in /etc/network/interfaces, skip
 mac="$(awk '/Serial/ {print $3}' /proc/cpuinfo | tail -c 11 | sed 's/^\(.*\)/a2\1/' | sed 's/\(..\)/\1:/g;s/:$//')"
-if ! grep -q "eth0" /etc/network/interfaces; then
+file="/etc/network/interfaces"
+if ! grep -q "    hwaddress ether $mac" "$file"; then
   log_message "Setting eth0 MAC address to $mac (derivative of CPU s/n)"
-  cat <<EOF >> /etc/network/interfaces
-# static mac address for onboard ethernet (castellated pins)
-allow-hotplug eth0
-iface eth0 inet dhcp
-hwaddress ether $mac
-EOF
+  awk -v mac="$mac" '
+    { print }
+    /allow-hotplug eth0/ { count=5 }
+    count && --count == 0 { print "    hwaddress ether " mac }
+  ' "$file" > "$file.tmp" && mv "$file.tmp" "$file"
 else
-  log_message "eth0 already exists in /etc/network/interfaces, skipping"
+  log_message "eth0 mac address already set in /etc/network/interfaces, skipping"
 fi
 
 # Add term stuff to .bashrc