A container with BIND 9.8.1-P1 configured as a forwarder to AWS VPC DNS (by extracting the +2 DNS IP from AWS metadata).
Installing the image
Click on the Images item in the Container section of the VNS3 menu. Then select Upload Image.
Give the image a Name: e.g. dnsforwardaws
Paste the URL https://github.com/cohesivenet/dockerfiles/releases/download/dnsforwardaws-20150804/dnsforwardaws.tar.gz into the Image file url: box.
Click Upload
Running a container
Once the Status of the imported image is Ready then click the Action button and select Allocate.
Give the container a Name: e.g. dnsforwardaws
The Command: is /bin/bash /startdns.sh
Click Allocate
Make a note of the IP Address given to the container e.g. 198.51.100.2
Routing traffic to the container
Click on the Firewall item in the Connections section of the VNS3 menu.
Add firewall rules such as:
MACRO_CUST -o eth0 -s 198.51.100.0/28 -j MASQUERADE
PREROUTING_CUST -i eth0 -p udp -s 0.0.0.0/0 --dport 53 -j DNAT --to 198.51.100.2:53
Where 198.51.100.2 is the IP of the container once allocated. Then click Save and activate
The VNS3 manager (and all of its IPs will now work) as a DNS server.