Due to a recent containerd 1.7.24 update, your /dev/net/tun:/dev/net/tun mapping needs to be moved from the volumes section to the devices section.

Don’t be like me and realize this AFTER you leave home for the holidays.

  • RxBradOP
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    8 days ago

    Luckily I realized that I could Cloudflare-tunnel my Portainer UI out to a long random-nonsense subdomain name.

    That allowed me to fix it (and then immediately kill the tunnel – not a fan of exposing Portainer to the internet).