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CoreRAD is an extensible and observable IPv6 Neighbor Discovery Protocol router advertisement daemon, released under the Apache 2.0 License.

You can find the source code at

CoreRAD Grafana + Prometheus dashboard


CoreRAD is a modern IPv6 NDP router advertisement daemon, written in Go.

Some of the project’s key features include:

  • support for Prometheus metrics for dashboards and alerting
  • monitoring of upstream (WAN-facing) router advertisements to determine if and when an IPv6 default route will expire
  • monitoring of downstream (LAN-facing) router advertisements to ensure they do not conflict with CoreRAD’s own configuration
  • an HTTP API for troubleshooting and debugging
  • flexible configuration which can be tailored for each advertising network interface

Future goals include:

  • dynamic router advertisement configuration via HTTP and/or gRPC APIs
  • expanded HTTP API capabilities
  • better support for *BSD and other platforms (these mostly work today, with some caveats)


CoreRAD is currently deployed and running on several home LAN networks. Early adopters are welcome to join us on:

For more information, you can also check out: