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A comment on I spent a week without IPv4 (2023). Parent comment

Re:I spent a week without IPv4 (2023) by hylaride on Saturday December 20, 2025 @04:25PM (#46339768)
> my tmobile 5g modem has ipv4 but changes ip every single page load, it's wild

They're probably using CG-NAT, though IP changes that often is a bit aggressive.

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Re:I spent a week without IPv4 (2023) by WarOnPrivacy on Saturday December 20, 2025 @05:42PM (#46340339)
> They're probably using CG-NAT, though IP changes that often is a bit aggressive.

TMobile uses IPv4 addys in DOD's address space. They do change unexpectedly often.

And yeah. Being DOD IPs, they're cgnat'd behind tmobile's public ASN.

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