Nov 3, 2015
Add more than one Elastic IPs to an EC2 Instance
Explained in Steps.
1. As suggested in this article, VPC is required. http://blog.ls20.com/get-two-public-ips-on-an-amazon-ec2-instance-for-free/
2. Select the existing Network Interface
3. Add new Private IP Address. say a.b.c.d
4. Add new Elastic IP Address say A.B.C.D (use VPC scope)
5. Associate the Elastic IP A.B.C.D to a.b.c.d of the existing interface.
6. Login to the instance with any other IP (previous one)
7. Run following command sudo ip addr add dev eth0 a.b.c.d/24
8. Save to command to /etc/rc.local for auto assign on reboot
9. Ping the IP to verify. Suppose m.n.o.p was the existing private IP ping a.b.c.d -I m.n.o.p
