Deprecated

• The next minor release of Nebula, 1.9.0, will require at least Windows 10 or Windows Server 2016. This is because support for earlier versions was removed in Go 1.21. See https://go.dev/doc/go1.21#windows

Added

• Linux: Notify systemd of service readiness. This should resolve timing issues with services that depend on Nebula being active. For an example of how to enable this, see: examples/service_scripts/nebula.service. (#929)

• Windows: Use Registered IO (RIO) when possible. Testing on a Windows 11 machine shows ~50x improvement in throughput. (#905)

• NetBSD, OpenBSD: Added rudimentary support. (#916, #812)

• FreeBSD: Add support for naming tun devices. (#903)

Changed

• pki.disconnect_invalid will now default to true. This means that once a certificate expires, the tunnel will be disconnected. If you use SIGHUP to reload certificates without restarting Nebula, you should ensure all of your clients are on 1.7.0 or newer before you enable this feature. (#859)

• Limit how often a busy tunnel can requery the lighthouse. The new config option timers.requery_wait_duration defaults to 60s. (#940)

• The internal structures for hostmaps were refactored to reduce memory usage and the potential for subtle bugs. (#843, #938, #953, #954, #955)

• Lots of dependency updates.

Fixed

• Windows: Retry wintun device creation if it fails the first time. (#985)

• Fix issues with firewall reject packets that could cause panics. (#957)

• Fix relay migration during re-handshakes. (#964)

• Various other refactors and fixes. (#935, #952, #972, #961, #996, #1002, #987, #1004, #1030, #1032, ...)