Product SiteDocumentation Site

9.3.2. Configure dhcrelay as a DHCPv6 relay agent

To run dhcrelay in DHCPv6 mode add the -6 argument and specify the lower interface (on which queries will be received from clients or from other relay agents) and the upper interface (to which queries from clients and other relay agents should be forwarded). Copy dhcrelay.service to dhcrelay6.service and edit it as the root user:
~]# cp /lib/systemd/system/dhcrelay.service /etc/systemd/system/dhcrelay6.service
~]# vi /etc/systemd/system/dhcrelay6.service
Edit the ExecStart option under section [Service] add -6 argument and add the lower interface and upper interface interface, for example:
ExecStart=/usr/sbin/dhcrelay -d --no-pid -6 -l em1 -u em2
For other options see the dhcrelay(8) man page.
To activate the changes made, as the root user, restart the service:
~]# systemctl --system daemon-reload
~]# systemctl restart dhcrelay6