HN Explorer

Ask HN: Does your home ISP use NAT/PAT or CGNAT?

7 points by garbagecoder ↗ HN
I just upgraded from cable to fiber and while I was glad to finally get symmetric, I was shocked that not only do I even not have a public IP, I can't override their DHCP or DNS settings without adding my own double-NAT. Cable had a dynamically assigned public IP and let me use the modem as a bridge.

6 comments

[ 3.1 ms ] story [ 22.3 ms ] thread
detaro
1 IPv4 (and thus my router (not ISP-provided) does NAT), /56 for IPv6, both rotate every 24h
NoZebra120vClip
I am assigned one public IPv4 and a /64 in IPv6 space. My customer-owned router provides IPv4 NAT for all devices behind it; no translation is necessary for devices using IPv6.
nickb333
My ISP in the UK gave me a /32 and a /29 for IPv4 and a /48 for IPv6. That was 10 years ago. I keep this when I move from DSL to their fibre product. They also offer a L2TP service which could be used to put a Public IPv4 over a CGNAT connection.
KomoD
CGNAT initially, called customer service and they gave me a public ip.
easytiger
Yea. And yes it is terrible. But i paid for a ipv4 static from the ISP
garbagecoder
I have to switch providers even to do that. For now Tailscale is my friend.