dnsmasq dhcp ipv6

Dnsmasq is a lightweight DNS and DHCP server software that can be used to provide IPv6 addresses to clients via DHCPv6. Here are the basic steps to configure Dnsmasq to provide IPv6 addresses to clients:

1. Install Dnsmasq on your server.
2. Edit the Dnsmasq configuration file (/etc/dnsmasq.conf) and add the following lines to enable DHCPv6:

dhcp-range=::100,::1ff,constructor:eth0,ra-names,slaac
enable-ra

The first line sets the range of IPv6 addresses to be assigned to clients. The "constructor:eth0" option specifies that the IPv6 addresses should be assigned to clients on the eth0 interface. The "ra-names" option tells Dnsmasq to include the clients' hostnames in the Router Advertisement messages. The "slaac" option enables Stateless Address Autoconfiguration, which allows clients to generate their own IPv6 addresses based on the prefix advertised by the router. The second line enables Router Advertisement messages, which tell clients about the network's IPv6 prefix and other configuration information.

3. Restart the Dnsmasq service to apply the changes:

sudo systemctl restart dnsmasq

4. Configure your router to advertise the IPv6 prefix assigned to your network by Dnsmasq. This will allow clients to automatically configure their IPv6 addresses.

With these steps, you should have a working DHCPv6 server on your network, providing IPv6 addresses to clients.