I can ping the client's IP address (assigned by MX64 VPN client setup), once I know that address, but I can't ping it via DNS. The client is assigned a DNS server inside the office (via MX64 VPN client setup), so the client can access office resources via DNS. However, the office can't access client resources via DNS--it just fails. I see the office server assign an internal IP address and DNS record to the client, but requests to either fail.