this post was submitted on 12 Dec 2023
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Steam Deck

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A place to discuss and support all things Steam Deck.

Replacement for r/steamdeck_linux.

As Lemmy doesn't have flairs yet, you can use these prefixes to indicate what type of post you have made, eg:
[Flair] My post title

The following is a list of suggested flairs:
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Some more Steam Deck specific flairs:
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[–] vividspecter@lemm.ee 1 points 11 months ago (1 children)

You might be on a CG-NAT network which makes port forwarding impossible. Some ISPs will disable it if you ask (or give you an ipv6 IP which isn't affected by the issue).

[–] Eggyhead@kbin.social 1 points 11 months ago (1 children)

How can I go about learning what any of this means and how to look for it?

[–] vividspecter@lemm.ee 2 points 11 months ago* (last edited 11 months ago)

If you go to https://ipinfo.io at home (over wifi or ethernet) and it says your ip is in the 100.64.0.0/10 range, then you are on a CG-NAT network.

This wikipedia article may be helpful. The short answer is that we are running out of public IPv4 addresses so CG-NAT is used so a bunch of users can essentially share 1 (or a few) public IPs. From the router's perspective, you have a public IP that is actually a private IP in the 100.64.0.0/10 range.

However, not having a real public IP means you have no way for remote devices to directly access your router, so port forwarding won't work.