We have are behind the ECE Whittemore NAT, which is on a single 100 Mbps CNS port, which comes with . We have the following limitations:* All adjustments to ECE DNS must be made through Brandon* IP addresses are difficult to claim, because they must be forwarded through the NAT, and ARP proxying must be configured by Brandon* IPv6 is not supported behind the Whittemore NAT Consequently, We must:* Use an IPv6 tunnel if we want access to IPv6 addresses* Keep all internal services (like NFS) on an internal network <!--* Only one MAC address may appear on the port at a time (port security)

* Use an NDP proxy for IPv6-->