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zrailtoday at 11:34 AM1 replyview on HN

Out of curiosity how did you discover this?


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phiretoday at 12:11 PM

Went to double check what my static IP address was, and noticed the router was displaying it as 198.51.100.48/28 (not my real IP).

I don't think the router used to show subnets like that, but it recently got a major firmware update... Or maybe I just never noticed, I've had that static IP allocation for over 5 years. My ISP gave it to me for free after I complained about their CGNAT being broken for like the 3th time.

Guess they decided it was cheaper to just gave me a free static IPv4 address rather than actually looking at the Wireshark logs I had proving their CGNAT was doing weird things again.

Not sure if they gave me a full /28 by mistake, or as some kind of apology. Guess they have plenty of IPs now thanks to CGNAT.

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