Merge pull request #96 from linuxserver/peers

change ip when subnet changes

Author: aptalca

README.md

@@ -291,6 +291,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **11.02.21:** - Fix bug related to changing internal subnet and named peer confs not updating.
 * **06.10.20:** - Disable CoreDNS in client mode, or if port 53 is already in use in server mode.
 * **04.10.20:** - Allow to specify a list of names as PEERS and add ALLOWEDIPS environment variable. Also, add peer name/id to each one of the peer sections in wg0.conf. Important: Existing users need to delete `/config/templates/peer.conf` and restart
 * **27.09.20:** - Cleaning service binding example to have accurate PreDown script.

readme-vars.yml

@@ -103,6 +103,7 @@ app_setup_block: |
   
 # changelog
 changelogs:
+  - { date: "11.02.21:", desc: "Fix bug related to changing internal subnet and named peer confs not updating." }
   - { date: "06.10.20:", desc: "Disable CoreDNS in client mode, or if port 53 is already in use in server mode." }
   - { date: "04.10.20:", desc: "Allow to specify a list of names as PEERS and add ALLOWEDIPS environment variable. Also, add peer name/id to each one of the peer sections in wg0.conf. Important: Existing users need to delete `/config/templates/peer.conf` and restart" }
   - { date: "27.09.20:", desc: "Cleaning service binding example to have accurate PreDown script." }

root/etc/cont-init.d/30-config

@@ -185,10 +185,13 @@ DUDE"
     fi
     if [ -f "/config/${PEER_ID}/${PEER_ID}.conf" ]; then
       CLIENT_IP=$(cat /config/${PEER_ID}/${PEER_ID}.conf | grep "Address" | awk '{print $NF}')
+      if [ -n "${ORIG_INTERFACE}" ] && [ "${INTERFACE}" != "${ORIG_INTERFACE}" ]; then
+        CLIENT_IP=$(echo "${CLIENT_IP}" | sed "s|${ORIG_INTERFACE}|${INTERFACE}|")
+      fi
     else
       for idx in {2..254}; do
         PROPOSED_IP="${INTERFACE}.${idx}"
-        if ! grep -q -R "${PROPOSED_IP}" /config/peer*/*.conf; then
+        if ! grep -q -R "${PROPOSED_IP}" /config/peer*/*.conf && ([ -z "${ORIG_INTERFACE}" ] || ! grep -q -R "${ORIG_INTERFACE}.${idx}" /config/peer*/*.conf); then
           CLIENT_IP="${PROPOSED_IP}"
           break
         fi