The stateless NAT46 feature enables communication between IPv4 and IPv6 networks through IPv4 to IPv6 packet translation, and vice versa, without maintaining any session information on the NetScaler appliance.
For a stateless NAT46 configuration, the appliance translates an IPv4 packet to IPv6 or an IPv6 packet to IPv4 as defined in RFCs 6145 and 2765.
The appliance translates an IPv6 response packet into an IPv4 response packet with its source IP address field set as the IPv4 address specified in the INAT entry. The translated packet is then sent to the client.
During IPv6 packet to IPv4 packet translation, the appliance sets the destination IP address of the translated IPv4 packet to the last 32 bits of the destination IP address of the IPv6 packet.
Consider an example in which an enterprise hosts site www.example.com on server S1, which has an IPv6 address. To enable communication between IPv4 clients and IPv6 server S1, NetScaler appliance NS1 is deployed with a stateless NAT46 configuration that includes an IPv4-IPv6 INAT entry for server S1, and a NAT46 Prefix. The INAT entry includes an IPv4 address at which the appliance listens to connection requests from IPv4 clients on behalf of the IPv6 server S1.
|IP address of the client||Client_IPv4 (for reference purposes only)||192.0.2.60|
|IPv6 address of the server||Sevr_IPv6 (for reference purposes only)||2001:DB8:5001::30|
|IPv4 address defined in the INAT entry for IPv6 server S1||Map-Sevr-IPv4 (for reference purposes only)||192.0.2.180|
|IPv6 prefix for NAT 46 translation||NAT46_Prefix (for reference purposes only)||2001:DB8:90::|
> add inat exmpl-com-stls-nat46 192.0.2.180 2001:DB8:5001::30 -mode stateless Done > set inatparam -nat46v6Prefix 2001:DB8:90::/96 Done
* A required parameter
Navigate to Settings group, click Configure INAT Parameters, and set the Prefix parameter., in the
The appliance provides some optional global parameters for stateless NAT46 configurations.
> set inatparam -nat46IgnoreTOS YES -nat46ZeroCheckSum DISABLED -nat46v6Mtu 1400 -nat46FragHeader DISABLED Done
Navigate to Settings group, click Configure INAT Parameters., in the