Setup DHCPv6 with Prefix Delegation

The first job is to enable the IPv6 in order to have the rest the configurations available. Select the "enable" button.

Unlike the IPv6 provided by ISP, since we want DHCPv6 with prefix delegation, we select that.

For both DNS locations, you can setup the DNS lookup IPv6 DNS address. From the example above, I use Cloudflare and Google DNS servers.

Now that we're done, we should disable all the IPv6 services including Radvd. This is because we are going to use dnsmasq to handle the dhcp services.

With all settings configured, press "SAVE" and not "APPLY" because we still got things to do.

The next thing to do is to configure Dnsmasq to handle IPv6. Head over to "Services" > "Services" and scroll down to Dnsmasq. There are 2 sets of configurations to be done.

• no-resolv = don't read /etc/resolv.conf and use specified DNS server.
• no-negcache = disable negative caching to prevent unwanted failure name resolution.
• server = specifies DNS server. You should specify both IPv4 and IPv6 separately.
• local = specifies local domain server.
• expand-hosts = add DNS domain name to short hostnames.
• domain-needed = do not forward A or AAAA to upstream since they do not know anything about LAN.
• dhcp-range = specifies the range of IPs from ::1000 to ::FFFF) against the network interface, with ra-stateless IP assignment, dual-stack hosts (ra-names) and lease time of 12 hours.
• ra-param = non-default values for router advertisements sent to interface br0.
• enable-ra = enable router advertisement.