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n/dns.md: mention that subnet is not limited to /24 or /56 but to server configuration

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Aminda Suomalainen 2024-05-06 15:17:11 +03:00
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@ -66,7 +66,8 @@ least temporary. Thus I think this list belongs here close enough.
## What is ECS?
EDNS Client-Subnet is a DNS extension letting the authoritative nameserver
know your `/24` (IPv4) or `/56` (IPv6).
know your subnet, generally a `/24` (IPv4) or a `/56` (IPv6), but the revealed
subnet size is up to your DNS resolver configuration.
- /24 is the first three parts of your IPv4 address e.g. 192.0.2.xxx.
The last part of your IP address (the xxx) again is a number between 1