Cisco Cisco ASA for Nexus 1000V Series Switch Manual Técnica

Here is the basic configuration for Stateless DHCPv6 relay configuration on the ASA:

With stateless DHCPv6, here is the packet flow from the client:

The ASA intercepts these packets and wraps them into the DHCP relay format:

If you enable debug ipv6 dhcprelay and debug ipv6 dhcp, then relevant output prints to the
screen. This output is taken from a working scenario:

In the INFORMATION-REQUEST request packet, the client only requests DNS-Server and
Domain, which is expected since the cilent is configured for stateless DHCPv6.