ISC DHCP 4.3.1

# Some common parameters
dhcpv6-lease-file-name "/var/db/dhcpd/dhcpd6.leases";
pid-file-name "/var/run/dhcpd/dhcpdv6.pid";
# By default not auth
not authoritative;
deny bootp;
ignore unknown-clients;
# Services configuration
option dhcp6.domain-search "acme.org";
option dhcp6.sntp-servers 2001:DB8:1::69,2001:DB8:2::69;
# Default DHCP timers
min-lease-time 43200;
max-lease-time 43200;
default-lease-time 43200;
# T1 and T2 timers
option dhcp-renewal-time 16200;
option dhcp-rebinding-time 24300;
option client-class-information code  97 = string;
log-facility local1;

# An example of a subnet where we provide a pool for registered clients
shared-network "Shared-S1-1-PB1" {
    subnet6 fd01:db8:a1:1::/64 { } # S1-1-PB1
    subnet6 2001:db8:a1:1::/64 { # S1-1-DA1
        pool6 {
            deny unknown-clients;
            range6 2001:db8:a1::101:0/112;
        }
    }
}

# A group with  desktop definitions
group { # desktops clients
  host A-136-1-C1-AA-05-BB-3A-AA { hardware ethernet C1:AA:05:BB:3A:AA; option host-name "a-136-1"; ddns-hostname "a-136-1"; }
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