01 / THE PLAYGROUND

What's dn42

dn42 is a large, dynamic VPN that employs Internet technologies (BGP, whois database, DNS, etc.).

Participants connect to each other using network tunnels (GRE, OpenVPN, WireGuard, Tinc, IPsec) and exchange routes using the Border Gateway Protocol.

Why dn42?

dn42 can be used to learn networking and to connect private networks, such as hackerspaces or community networks. But above all, experimenting with routing in dn42 is fun!

02 / MY CORNER OF THE NETWORK

AS4242423884

AS4242423884, aka NOETTORE-NETWORK, is my experimental network participating in the dn42 overlay network.

IPv4 prefix

172.21.68.0/27

IPv6 prefix

fded:aab3:fb63::/48

View in registry ↗

03 / INFRASTRUCTURE

Nodes information

04 / LET'S CONNECT

Peering policy

I'm open to all peering requests, as long as you use:

• WireGuard for the peering link
• Link-local IPv6
• MP-BGP with Extended Next Hop via IPv6 is preferred
• Separate IPv4 and IPv6 BGP sessions are accepted when Extended Next Hop is not supported

WireGuard parameters

Tunnel MTU

1420

Local port allocation

20000 + (peer ASN % 10000)

For example, a peer using AS4242423000 is assigned port 23000.

Routing policy

Full transit is provided. Routes are validated against RPKI. Only routes within the following DN42 address space are accepted:

• 172.20.0.0/14
• 10.0.0.0/8
• fd00::/8

05 / SAY HELLO

Peering request

To request a peering, please contact me at ettore<at>dreucci.it and include the following information.

Please sign the email with the PGP/SSH key as reported in your -MNT object in the dn42 registry.

• The node you want to peer with
• Your node location
• dn42 ASN
• WireGuard endpoint and port (if available)
• WireGuard public key
• dn42 IPv4 (not required if you choose Extended Next Hop)
• dn42 IPv6
• Tunnel link-local IPv6 address

06 / NETWORK SERVICES

Network services