Welcome • User Guide
ToS • Privacy • Canary
Donate • Bugs • License

©2025 Poal.co

203

I don't have to deal with this currently but it sounds like a PITA.

Archive: https://archive.today/rCS1V

From the post:

>In recent years, major access providers have switched en masse to carrier-grade NAT (CGNAT). In CGNAT, multiple NAT layers are superimposed to give a large number of users access to the internet via a small number of public IPv4 addresses. CGNAT's technical name – NAT444 – alludes to how the technology works: as with traditional NAT (NAT44), the end user is assigned a non-routable address from the private series defined in RFC 1918. However, whereas there used to be a "true" public IPv4 address on the uplink side of the user's modem, there is now an intermediate network operated by the access provider. In RFC 6598, IANA released the address block 100.64.0.0/10 specifically to make that possible. The block can be used by all access providers and is therefore exclusively for local routing. The intermediate network includes not only end users' routers or CPEs (with private addresses on both sides), but also the CGNAT gateways via which the CPE routers access the internet itself.

I don't have to deal with this currently but it sounds like a PITA. Archive: https://archive.today/rCS1V From the post: >>In recent years, major access providers have switched en masse to carrier-grade NAT (CGNAT). In CGNAT, multiple NAT layers are superimposed to give a large number of users access to the internet via a small number of public IPv4 addresses. CGNAT's technical name – NAT444 – alludes to how the technology works: as with traditional NAT (NAT44), the end user is assigned a non-routable address from the private series defined in RFC 1918. However, whereas there used to be a "true" public IPv4 address on the uplink side of the user's modem, there is now an intermediate network operated by the access provider. In RFC 6598, IANA released the address block 100.64.0.0/10 specifically to make that possible. The block can be used by all access providers and is therefore exclusively for local routing. The intermediate network includes not only end users' routers or CPEs (with private addresses on both sides), but also the CGNAT gateways via which the CPE routers access the internet itself.

(post is archived)

[–] • 2 pts

Selfhosted is the right sub. The trend is to make self hosting more and more difficult. Meanwhile the internet has become broadcast television. I'm sure these are related.

[–] • 0 pt

It kind of makes me wonder how stuff like DMCA and Piracy notices are handled in a situation like this. You could have a couple of hundred people behind one IP and just 1 of them could be pirating and without a ton of logs you would not know which one is "guilty".

[–] • 0 pt

i was considering if this was the right place for the post, but I agree with what you said. It directly affects your ability to self-host.

[–] • 2 pts

One practical outcome is that government agencies find it harder to identify criminals behind particular IPv4 addresses

Ironically, this technique increases privacy for consumers. I don't see a downside. Of course, law enforcement is upset, now they have to work again.