setLocal('172.22.23.4')
addLocal('[::1]:5300')
setACL({
'127.0.0.1',
'10.0.0.0/8',
'172.16.0.0/12',
'192.168.0.0/16'
})
newServer({address="1.1.1.1", pool="dnsServers2"})
newServer({address="8.8.8.8", pool="dnsServers1"})
newServer({address="9.9.9.9", tcpOnly=true})
newServer({address="8.8.4.4"})
newServer({address="8.8.4.4" useClientSubnet=true})
setServerPolicy()
leastOutstanding - Send query to the server with the lowest number of active query processesfirstAvailable - Send query to first server that hasn't exceeded its QPS limitwrandom - Question are distributed randomly. Weight can be applied with parameter in newServer()whashed - Questions with identical hashes are sent to the same serverchashed - Identical questions with identical hashes sent to the same serverroundrobin - Send questions to the next server in line.defaultCache = newPacketCache(10000, {maxTTL=86400, minTTL=0, temporaryFailureTTL=60, staleTTL=60, dontAge=false})
getPool(""):setCache(defaultCache)
defaultCache → Variable defining a new cachenewPacketCache → Create a new cache with the following parameters
10000 → The maximum entries the cache will store. Only required value.maxTTL → Max lifetime of an entry in the cacheminTTL → The minimum TTL a record should have to be considered for cachingtemporaryFailureTTL → TTL used for Server Failure or Refused responsesstaleTTL → TTL used when a stale entry is returneddontAge → If True, cached record's TTL will no be reduced (Sticky records)getPool("") → Selects the default server pool (empty string)setCache → Selects the predefined cache to use with the latter defined server poolEDNS Client Subnet
This will pass the source address of the query to the backend server.
setECSSourcePrefixV4(32) <-- Default is 24
setECSSourcePrefixV6(128) <-- Default is 56
When creating a new server
newServer({address="1.1.1.1", useClientSubnet=true})
To override an existing ECS tag on an incoming query
setECSOverride(true)
Use double hyphen to add a comment in dnsdist config
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