IPtable failure

[brendan-mccoy]

Information

I was using this fine for a while, but after clearing all my containers to reconfigure and redeploy, I'm not getting this when trying to start the container.

[s6-init] making user provided files available at /var/run/s6/etc...exited 0.
[s6-init] ensuring user provided files have correct perms...exited 0.
[fix-attrs.d] applying ownership & permissions fixes...
[fix-attrs.d] done.
[cont-init.d] executing container initialization scripts...
[cont-init.d] 01-setup-permissions: executing... 
[cont-init.d] 01-setup-permissions: exited 0.
[cont-init.d] 02-setup-openvpn: executing... 
Wed May 26 12:26:49 2021 TUN/TAP device tun0 opened
Wed May 26 12:26:49 2021 Persist state set to: ON
OpenVPN provider not set. Using configuration at /protonvpn/config.ovpn
[cont-init.d] 02-setup-openvpn: exited 0.
[cont-init.d] 03-setup-iptables: executing... 
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `nat': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
modprobe: can't change directory to '/lib/modules': No such file or directory
iptables v1.8.4 (legacy): can't initialize iptables table `filter': Table does not exist (do you need to insmod?)
Perhaps iptables or your kernel needs to be upgraded.
[cont-init.d] 03-setup-iptables: exited 3.
[cont-finish.d] executing container finish scripts...
[cont-finish.d] done.
[s6-finish] waiting for services.
[s6-finish] sending all processes the TERM signal.
[s6-finish] sending all processes the KILL signal and exiting.

Current setup

docker image tag (ex: python, latest, 32242d1 ...)	latest
docker image hash (ex: 603b78e07727)	28b3f5d6c9ce

docker-compose.yml file or docker run command

version: "3.8"
services:
  qbittorrent:
    volumes:
      - ./protonvpn:/protonvpn
      - "/etc/localtime:/etc/localtime:ro"
    environment:
      - OPENVPN_CONFIG_FILE=/protonvpn/config.ovpn
      - OPENVPN_USERNAME=user
      - OPENVPN_PASSWORD=pass
      - PUID=1000
      - PGID=1000
      - LAN=192.168.0.0/16
    ports:
      - "8080:8080"
    cap_add:
      - NET_ADMIN
    image: guillaumedsde/alpine-qbittorrent-openvpn:latest

Attempted Fix(es)

I've tried executing the same as the stock docker-compose on the readme, but still have the same result. I'm not sure if it's something to do with my new host? Before it was Ubuntu server 20.04 LTS, now it is RHEL 8. The other difference is my new host is IPv6 enabled, which I notice you say isn't supported. Is there something extra I must do when running from an IPv6 host?

[Mibo5354]

Solution:

$ modprobe ip_tables
$ modprobe ip_conntrack
$ modprobe iptable_filter
$ modprobe ipt_state

Found in https://github.com/linuxserver/docker-letsencrypt/issues/465