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mirror of https://git.dn42.dev/wiki/wiki.git synced 2024-12-14 01:49:55 +01:00
wiki/IPv6-Anycast.md
2014-08-01 19:21:14 +02:00

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We provide some anycast services over IPv6.
## Anycast address space
**fd42:d42:d42::/48** is reserved for anycast services.
Each anycast service runs on a dedicated /64 in this range. This way, nobody needs to update filters.
Remember, if you announce an anycast /64, then you need to provide **all** services within this /64. It's probably simpler to only provide one service for each /64.
## Anycast services
| **Name** | **/64 prefix announced** | **Service address** | **Protocol/port** | **Comment** |
|----------|-------------------------|---------------------|-------------------|---|
| Recursive DNS resolver | `fd42:d42:d42:53::/64` | `fd42:d42:d42:53::1` | UDP/53 | `.` and `dn42.` [Providers](Providing-Anycast-DNS#Persons-providing-anycast-DNS-for-IPv6) |
### Future services
- streaming
- other kind of DNS (authoritative-only, recursive for `dn42` only)