server: # *** Optimization **** cache-min-ttl: 0 # uncomment max ttl! # cache-max-ttl: 86400 msg-cache-size: 128m rrset-cache-size: 256m serve-expired: yes # ********************* # If no logfile is specified, syslog is used # logfile: "/var/log/unbound/unbound.log" verbosity: 0 interface: 127.0.0.1 port: 5335 do-ip4: yes do-udp: yes do-tcp: yes # May be set to yes if you have IPv6 connectivity do-ip6: no # You want to leave this to no unless you have *native* IPv6. With 6to4 and # Terredo tunnels your web browser should favor IPv4 for the same reasons prefer-ip6: no # Use this only when you downloaded the list of primary root servers! root-hints: "/var/lib/unbound/root.hints" # Trust glue only if it is within the servers authority harden-glue: yes # Require DNSSEC data for trust-anchored zones, if such data is absent, the zone becomes BOGUS harden-dnssec-stripped: yes # Don't use Capitalization randomization as it known to cause DNSSEC issues sometimes # see https://discourse.pi-hole.net/t/unbound-stubby-or-dnscrypt-proxy/9378 for further details use-caps-for-id: no # Reduce EDNS reassembly buffer size. # Suggested by the unbound man page to reduce fragmentation reassembly problems edns-buffer-size: 1472 # Perform prefetching of close to expired message cache entries # This only applies to domains that have been frequently queried prefetch: yes # One thread should be sufficient, can be increased on beefy machines num-threads: 1 # Ensure kernel buffer is large enough to not lose messages in traffic spikes so-rcvbuf: 1m # Ensure privacy of local IP ranges private-address: 192.168.0.0/16 private-address: 169.254.0.0/16 private-address: 172.16.0.0/12 private-address: 10.0.0.0/8 private-address: fd00::/8 private-address: fe80::/10