IPv6
IPv6 addresses can be configured per VLAN and assigned to the local LAN machines via a router solicitation/advertisement flow or DHCPv6.
Configuration
VPN Gateway IPv6 configuration information must be configured through the VPN Gateway Device Profile stored on the AT&T Administration Server. The IPv6 information is only configured at a VLAN level. The user can view the current DHCP assignments and configuration via the VPN Gateway web interface. The user does not have the ability to modify any LAN DHCP configuration through the web interface.
radvd Server
The radvd server is used for stateless IPv6 configuration and responds to the ICMPv6 router solicitation messages.
DHCPv6 Server
When configuring the DHCPv6 server in AT&T Administration Server you must specify the address range that the DHCPv6 server will hand out. The starting and ending addresses must fall within the prefix length for the VLAN that is servicing the requests.
DHCPv6 Options Support
If the VPN Gateway is configured as the DHCPv6 server, the administrator can configure specific DHCPv6 options to be passed back to the local IP devices within the DHCPv6 response. An option value will only be passed to the requesting device if it is specifically requested by the device within the DHCPv6 request. The VPN Gateway will concatenate the entries together to make a single entry in the DHCP configuration file. Up to 256 bytes can be configured for any one item.