From cd5b96a1efdf629017ddb70c7393e35f815f7e26 Mon Sep 17 00:00:00 2001
From: Cyberes <cyberes@evulid.cc>
Date: Tue, 20 Jun 2023 15:17:32 -0600
Subject: [PATCH] forgot a few things

---
 bridge/proxyarp/README.md      | 2 ++
 bridge/proxyarp/arp-install.sh | 4 +++-
 config/arp-config.sh.example   | 3 +++
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/bridge/proxyarp/README.md b/bridge/proxyarp/README.md
index 600564e..a616b0b 100644
--- a/bridge/proxyarp/README.md
+++ b/bridge/proxyarp/README.md
@@ -3,3 +3,5 @@
 This bridge is a lot simpler than the NAT version. Just plug your client(s) into the bridge and it should just work.
 
 Make sure to use a hub (NOT a switch) if you have more than one bridged client. A switch doesn't let the bridge see all the traffic from the clients.
+
+Also, `parprouted` has a bug where it prints its error messages as raw Ethernet frames over the network. If something isn't working, open Wireshark and restart `parprouted`. Look for white "Ethernet II" frames.
diff --git a/bridge/proxyarp/arp-install.sh b/bridge/proxyarp/arp-install.sh
index 96f8b65..4abf370 100755
--- a/bridge/proxyarp/arp-install.sh
+++ b/bridge/proxyarp/arp-install.sh
@@ -94,7 +94,7 @@ WPA_SUPP_FILE="/etc/wpa_supplicant/wpa_supplicant-$WLAN_IFACE.conf"
 cat >"$WPA_SUPP_FILE" <<EOF
 ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
 update_config=1
-country=USifconfig $WLAN_IFACE
+country=US
 network={
  ssid="$WIFI_SSID"
  scan_ssid=1
@@ -171,11 +171,13 @@ RestartSec=5
 TimeoutStartSec=30
 # clone the dhcp-allocated IP to $ETH_IFACE so dhcp-helper will relay for the correct subnet
 ExecStartPre=/bin/bash -c '/sbin/ip addr add \$(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\\d+\\\.\\\d+\\\.\\\d+\\\.\\\d+")/32 dev $ETH_IFACE'
+ExecStartPre=/sbin/ip link set dev $ETH_IFACE down
 ExecStartPre=/sbin/ip link set dev $ETH_IFACE up
 ExecStartPre=/sbin/ip link set $WLAN_IFACE promisc on
 ExecStart=-/usr/sbin/parprouted $ETH_IFACE $WLAN_IFACE
 ExecStopPost=/sbin/ip link set $WLAN_IFACE promisc off
 ExecStopPost=/sbin/ip link set dev $ETH_IFACE down
+ExecStopPost=/sbin/ip link set dev $ETH_IFACE up
 ExecStopPost=/bin/bash -c '/sbin/ip addr del \$(/sbin/ip -4 -br addr show $WLAN_IFACE | /bin/grep -Po "\\\d+\\\.\\\d+\\\.\\\d+\\\.\\\d+")/32 dev $ETH_IFACE'
 
 [Install]
diff --git a/config/arp-config.sh.example b/config/arp-config.sh.example
index aad07a1..8e2f5e6 100644
--- a/config/arp-config.sh.example
+++ b/config/arp-config.sh.example
@@ -6,6 +6,9 @@ ETH_IFACE="eth0"
 # This will be your WAN port.
 WLAN_IFACE="wlan0"
 
+# The IP(s) of your DHCP servers. If multiple, seperate with space.
+DHCP_SERVERS="192.168.1.1"
+
 # Name of the WiFi network to connect to.
 WIFI_SSID="Example-Network"