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2026-02-01 14:43:18 -05:00

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server:
# Listen on all interfaces (inside container)
interface: 0.0.0.0
port: 53
# Allow queries from Docker networks
access-control: 10.0.0.0/8 allow
access-control: 172.16.0.0/12 allow
access-control: 192.168.0.0/16 allow
access-control: 127.0.0.0/8 allow
# Performance tuning for high-volume lookups
num-threads: 4
msg-cache-slabs: 8
rrset-cache-slabs: 8
infra-cache-slabs: 8
key-cache-slabs: 8
# Cache sizes (MB) - generous for domain crawling
msg-cache-size: 128m
rrset-cache-size: 256m
key-cache-size: 32m
neg-cache-size: 64m
# Cache TTL settings
cache-min-ttl: 300
cache-max-ttl: 86400
cache-max-negative-ttl: 300
# Prefetch popular entries before expiry
prefetch: yes
prefetch-key: yes
# Serve stale data while refreshing
serve-expired: yes
serve-expired-ttl: 86400
# Connection handling
so-reuseport: yes
outgoing-range: 8192
num-queries-per-thread: 4096
# Logging (minimal for performance)
verbosity: 1
log-queries: no
log-replies: no
# Security
hide-identity: yes
hide-version: yes
harden-glue: yes
harden-dnssec-stripped: yes
use-caps-for-id: yes
# Don't use system resolv.conf
do-not-query-localhost: no
# Upstream DNS servers (forwarding mode for speed)
forward-zone:
name: "."
forward-tls-upstream: yes
# Cloudflare DNS (fast, reliable)
forward-addr: 1.1.1.1@853#cloudflare-dns.com
forward-addr: 1.0.0.1@853#cloudflare-dns.com
# Google DNS (fallback)
forward-addr: 8.8.8.8@853#dns.google
forward-addr: 8.8.4.4@853#dns.google