WebTunnel/Docker: "Unable to find IPv6 address for ORPort"

Support Relay Operator
2

<no warranty for nothing - works for me^^>

First of all, this will not stop the spamming your logs, there will be new/other warnings but IPv6 should work (at least it did for me)… :wink:

Assumption: You used these instructions Tor Project | WebTunnel Docker setup

Your .env should have these additional lines (and you may remove the GENEDORPORT-line (number 4 from instructions):

WEBTUNNEL_ENABLE_ADDITIONAL_VARIABLES=1
WEBTUNNELV_AssumeReachable=1
WEBTUNNELV_ORPort=[::1]:auto IPv6Only

docker-compose.yml should be adapted like this (I removed watchtower):

networks:
  wtb_net:
    enable_ipv6: true
    driver: bridge
    ipam:
      driver: default
      config:
        - subnet: 2001:db8:1::/64
          gateway: 2001:db8:1::108

services:
    webtunnel-bridge:
        restart: always
        environment:
            - NICKNAME=$BRIDGE_NICKNAME
            - PT_PORT=15000
            - OR_PORT=127.0.0.1:auto
            - EMAIL=$OPERATOR_EMAIL
            - WEBTUNNEL_URL=$URL
            - WEBTUNNEL_ENABLE_ADDITIONAL_VARIABLES=1
            - WEBTUNNELV_AssumeReachable=$WEBTUNNELV_AssumeReachable
            - WEBTUNNELV_ORPort=$WEBTUNNELV_ORPort
        volumes:
            - 'webtunnel-tor-state:/var/lib/tor'
        user: debian-tor
        ports:
            - '127.0.0.1:15000:15000'
        container_name: webtunnelBridge
        image: 'thetorproject/webtunnel-bridge:latest'
        networks:
          wtb_net:
            ipv6_address: 2001:db8:1::256


volumes:
  webtunnel-tor-state:

Explanation:
ORPort in environment is set to 127.0.0.1:auto → It should not be reachable from outside (see).
Also via WEBTUNNELV_ORPort=[::1]:auto tor is instructed to use IPv6.
So consequently the line - '$GENEDORPORT:$GENEDORPORT' is removed, because ORPort will not be exposed.

Additionally a new network with IPv6 is defined and started, when the container is running. This might need to be adapted to a different subnet, if you have other IPv6 containers on your host.

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