Billion BIPAC 8500 User Manual page 36

Billion BIPAC-8500 / 8520 SHDSL VPN Firewall Bridge / Router
If you check DHCP Relay Agent and click Next, then you will have to enter the IP address
of the DHCP server which will assign an IP address back to the DHCP client in the LAN.
Use this function only if advised to do so by your network administrator or ISP.
Click Apply to enable this function.
Chapter 4: Configuration
32