# Configure DHCP message routing

The engine can relay DHCP messages. If DHCP messages are routed through the engine (from a network segment to some other, isolated segment), you must enable DHCP relay on the engine interface properties for the interface where the DHCP requests are originating from (client’s network).

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Both IPv4 and IPv6 addresses are supported in DHCP relay. You can enable both IPv4 and IPv6 DHCP relay on the same engine interface.

This DHCP relay configuration does not relay DHCP messages from VPN Clients. You can configure DHCP message settings for VPN Clients in the VPN > VPN Clients branch of the Engine Editor.