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标签：dns

systemd-resolved and resolvectl: DNS Troubleshooting

systemd-resolved and resolvectl: DNS Troubleshooting

Fix DNS on systemd hosts: the stub on 127.0.0.53, resolvectl status, query and per-link route-only domains, DNSSEC pitfalls and why resolv.conf keeps

admin admin 2026-09-14
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BIND9 Authoritative DNS Server: Zone Configuration Guide

BIND9 Authoritative DNS Server: Zone Configuration Guide

Run an authoritative-only BIND9 server: harden global options, declare forward and reverse zones, validate with named-checkzone and verify answers wit

admin admin 2026-09-09
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dig and nslookup: DNS Troubleshooting Commands Explained

dig and nslookup: DNS Troubleshooting Commands Explained

Diagnose DNS failures with dig and nslookup: read status codes and flags, query specific resolvers, use dig +trace, validate DNSSEC and fix common fai

admin admin 2026-09-06
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