use peer address

data/post-script.sh

@@ -2,13 +2,14 @@
 
 # TUN_INTERFACE
 # TUN_ADDRESS
+# TUN_REMOTE_ADDRESS
 # TUN_TABLE
 # TUN_TABLE_2
 # TUN_PREF
 # TUN_POST_SCRIPT
 
 ip link set "$TUN_INTERFACE" up
-ip addr add "$TUN_ADDRESS" dev "$TUN_INTERFACE"
+ip addr add "$TUN_ADDRESS" peer "$TUN_REMOTE_ADDRESS" dev "$TUN_INTERFACE"
 
 if [[ "$TUN_TABLE" != "none" ]]; then
 	ip route replace default dev "$TUN_INTERFACE" table "$TUN_TABLE";

data/run.sh

@@ -5,4 +5,4 @@ export REMOTE_TUN_INTERFACE="tun$REMOTE_TUN_ID"
 
 nohup ./wait-daemon.sh &
 
-cat ./post-script.sh | env TUN_INTERFACE="$REMOTE_TUN_INTERFACE" TUN_ADDRESS="$REMOTE_TUN_ADDRESS" TUN_TABLE="$REMOTE_TUN_TABLE" TUN_TABLE_2="$REMOTE_TUN_TABLE_2" TUN_PREF="$REMOTE_TUN_PREF" TUN_POST_SCRIPT="$REMOTE_TUN_POST_SCRIPT" envsubst | ssh -TCw "$LOCAL_TUN_ID:$REMOTE_TUN_ID" -i "$SSH_KEY_FILE" -o StrictHostKeyChecking=no -p "$SSH_PORT" "$SSH_HOST" /bin/bash
+cat ./post-script.sh | env TUN_INTERFACE="$REMOTE_TUN_INTERFACE" TUN_ADDRESS="$REMOTE_TUN_ADDRESS" TUN_REMOTE_ADDRESS="$LOCAL_TUN_ADDRESS" TUN_TABLE="$REMOTE_TUN_TABLE" TUN_TABLE_2="$REMOTE_TUN_TABLE_2" TUN_PREF="$REMOTE_TUN_PREF" TUN_POST_SCRIPT="$REMOTE_TUN_POST_SCRIPT" envsubst | ssh -TCw "$LOCAL_TUN_ID:$REMOTE_TUN_ID" -i "$SSH_KEY_FILE" -o StrictHostKeyChecking=no -p "$SSH_PORT" "$SSH_HOST" /bin/bash

data/wait-daemon.sh

@@ -15,4 +15,4 @@ done
 
 echo "$LOCAL_TUN_INTERFACE is up. Initializing..."
 
-env TUN_INTERFACE="$LOCAL_TUN_INTERFACE" TUN_ADDRESS="$LOCAL_TUN_ADDRESS" TUN_TABLE="$LOCAL_TUN_TABLE" TUN_TABLE_2="$LOCAL_TUN_TABLE_2" TUN_PREF="$LOCAL_TUN_PREF" TUN_POST_SCRIPT="$LOCAL_TUN_POST_SCRIPT" ./post-script.sh
+env TUN_INTERFACE="$LOCAL_TUN_INTERFACE" TUN_ADDRESS="$LOCAL_TUN_ADDRESS" TUN_REMOTE_ADDRESS="$REMOTE_TUN_ADDRESS" TUN_TABLE="$LOCAL_TUN_TABLE" TUN_TABLE_2="$LOCAL_TUN_TABLE_2" TUN_PREF="$LOCAL_TUN_PREF" TUN_POST_SCRIPT="$LOCAL_TUN_POST_SCRIPT" ./post-script.sh