zone e57-2.tg16.gathering.org { primary 127.0.0.1; key DHCP_UPDATER; } subnet6 2a06:5840:23a::/64 { option domain-name "e57-2.tg16.gathering.org"; range6 2a06:5840:23a::1000 2a06:5840:23a::9999; }