docs: add DNS seed setup guide for Debian#750
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Add a step-by-step guide for running a Namecoin DNS seed on Debian using the gombadi/dnsseeder. Covers DNS delegation, building from source, systemd service setup, verification, and troubleshooting. The guide points to the mstrofnone/dnsseeder fork which includes two commits needed for the seeder to work correctly with modern resolvers: - 388ad4b: Add synthetic SOA and NS records. The upstream seeder does not respond to SOA or NS queries, and its handleDNS() switch falls through to UNKNOWN for SOA — never matching a map key. Modern recursive resolvers expect authoritative nameservers to answer SOA queries; without these responses, resolvers treat the zone as broken and cache SERVFAIL, making the seed unreachable via normal DNS resolution. - f36b4fa: Add Debian deploy script (deploy-debian.sh) that automates the full setup — Go installation, building, systemd unit creation, and iptables port-53 redirection. Update the contribute page to link to the new guide.
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Add a step-by-step guide for running a Namecoin DNS seed on Debian using gombadi/dnsseeder.
Changes
docs/dns-seed/index.md(new): Full guide covering DNS delegation, building from source, Namecoin mainnet config, running on port 53 (setcap or iptables), systemd service, verification, and troubleshooting.contribute/index.md: Added link from the existing "Run a DNS seed" section to the new guide.Motivation
The contribute page currently points users to the dnsseeder repo with minimal instructions. This guide walks through the entire process on Debian, including DNS setup, systemd-resolved conflicts, and getting the seed added to Namecoin Core.