Products - Migration to IPsec Virtual Tunnel Interface – Cisco IOS XE White Paper - Cisco
Robustel - Robustel routers support route-based IPsec, and when both the gateway and the host network use #IPv6 addresses, users can create either an auto-keyed or manually-keyed VPN. In Robustel's demo video
Route-Based IPSec VPN
Set Up IPSec Site to Site VPN Between Fortigate 60D (1) – Route-Based VPNs - InfoSec Memo