Anycast DNS

Description of service

This service provides an efficient and fault tolerant way of resolving 168.192.in-addr.arpa and 0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa zones across GLaNET.

  • To use it, simply add forwarding zones, pointing to the following servers:
  • Anycast DNS IPv4: 192.168.248.53.
  • Anycast DNS IPv6: fd00:6b64:f3b0::53.
BIND9 configuration example (forwarder) 
zone "168.192.in-addr.arpa" {
  type forward;
  forwarders { 192.168.248.53; fd00:6b64:f3b0::53; };
};

zone "0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa" {
  type forward;
  forwarders { 192.168.248.53; fd00:6b64:f3b0::53; };
};
Unbound configuration example (forwarder) 
server:
(...)
    local-zone:         "168.192.in-addr.arpa." nodefault
    local-zone:         "0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa." transparent

    domain-insecure:    "0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa."
(...)

stub-zone:
  name:         168.192.in-addr.arpa.
  stub-addr:    fd00:6b64:f3b0::53
  stub-addr:    192.168.248.53

stub-zone:
  name:         0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa.
  stub-addr:    fd00:6b64:f3b0::53
  stub-addr:    192.168.248.53
Knot Resolver configuration example (forwarder) 
(...)
-- Forward all requests for 168.192.in-addr.arpa. to fd00:6b64:f3b0::53 and 192.168.248.53
policy.add(policy.suffix(policy.STUB({'fd00:6b64:f3b0::53', '192.168.248.53'}), {todname('168.192.in-addr.arpa')}))

-- Forward all requests for 0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa to fd00:6b64:f3b0::53 and 192.168.248.53
policy.add(policy.suffix(policy.STUB({'fd00:6b64:f3b0::53', '192.168.248.53'}), {todname('0.b.3.f.4.6.b.6.0.0.d.f.ip6.arpa')}))
(...)

Recursive DNS

We also aim to provide a recursive anycast DNS service within GLaNET. To use it, just configure the following addresses as your resolver:

  • Anycast recursive DNS IPv4: 192.168.248.153.
  • Anycast recursive DNS IPv6: fd00:6b64:f3b0::153.