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NextMN-SRv6

NextMN-SRv6 is an experimental implementation for some SRv6 MUP Endpoint Behaviors.

Warning

This project is still at the early stages of development and contains bugs and will crash in unexpected manners. Please do not use it for anything other than experimentation. Expect breaking changes until v1.0.0

Roadmap

Provider Behavior Implemented? Todo
NextMN End.MAP no -
NextMN End.M.GTP6.D no -
NextMN End.M.GTP6.D.Di no -
NextMN End.M.GTP6.E yes send ICMP when errors
NextMN End.M.GTP4.E yes send ICMP when errors
NextMN H.M.GTP4.D yes send ICMP when errors, optional: respond to GTP Echo Req
NextMN End.Limit no -
NextMN End.M.GTP6.E.Red no requires a map of gnbs addr; order of bit field considerations
NextMNWithCtrl H.M.GTP4.D partial src address should not be hardcoded
NextMNWithCtrl H.Encaps partial src address should not be hardcoded
Linux End yes -
Linux End.DX4 yes -
Linux H.Encaps yes -
Linux H.Inline untested -
PDU Session Type Supported?
IPv4 yes
IPv6 no
IPv4v6 no
Ethernet no
Unstructured no

Incoming packet flow

incoming packet flow

Getting started

Build dependencies

  • golang
  • make (optional)

Runtime dependencies

  • iproute2
  • iptables

Build and install

Simply run make build and make install.

Docker

If you plan using NextMN-SRv6 with Docker:

  • The container requires the NET_ADMIN capability;
  • The container should enable IPv6, and Segment Routing
  • The container requires the forwarding to be enabled (not enabled by the container itself);
  • The tun interface (/dev/net/tun) must be available in the container.

This can be done in docker-compose.yaml by defining the following for the service:

cap_add:
    - NET_ADMIN
devices:
    - "/dev/net/tun"
sysctls:
    - net.ipv6.conf.all.disable_ipv6=0
    - net.ipv4.ip_forward=1
    - net.ipv6.conf.all.forwarding=1
    - net.ipv6.conf.all.seg6_enabled=1
    - net.ipv6.conf.default.seg6_enabled=1

Author

Louis Royer

License

MIT