Hello BIND community, I'd like to announce the release of a new open-source DLZ driver for BIND 9.18+ that provides dynamic DNS resolution for Netbird VPN peers.
## Overview Netbird (https://netbird.io) is an open-source WireGuard-based mesh VPN. This DLZ plugin fetches peer information from the Netbird API and serves A records for peer hostnames, allowing DNS queries like: nas.vpn.example.com -> 100.64.0.5 ## Technical Details - Written in C using the BIND 9.18+ DLZ dlopen interface - Uses official BIND headers (dns/dlz_dlopen.h, dns/sdlz.h) - Background pthread fetches from Netbird API every 5 minutes - Thread-safe lookups using pthread_rwlock - Atomic cache updates (pointer swap pattern) - Links against libcurl, jansson (JSON), and BIND's libdns/libisc ## Configuration Example dlz "netbird" { database "dlopen /usr/lib/bind/netbird_dlz.so bird.example.com YOUR_NETBIRD_API_KEY https://your-netbird-instance/api/peers";; }; ## Repository https://github.com/XNet-NGO/bind-dlz-netbird The README includes: - Build instructions for BIND 9.18+ - Docker deployment example - Troubleshooting guide ## Compatibility Tested with BIND 9.18.39 on Ubuntu 22.04 (ARM64). Should work with any BIND 9.18+ release using the modern DLZ API with dns_sdlzlookup_t. Feedback and contributions are welcome. -- XNet Inc. https://xnet.ngo XNet is a nonprofit corporation building network infrastructure for underserved communities.
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