Product : AppScale, Eucalyptus/Current, 4.4.5
Feature : Cross-premises connectivity, Networking, Infrastructure Services
Content Owner:  Bhagyashri (Shri) Bhagvat
Summary
Support for AWS VPN Gateway is available but only when using VPCMIDO network mode.
Details
http://docs.eucalyptus.cloud/eucalyptus/4.4.5/index.html#euca2ools-guide/vpc_euca2ools_intro.html