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
Configuring OpenSwan/LibreSwan IPSec Tunnel Between AWS and ON-PREM | by Raju Banerjee | ThoughtPillars@Cloud | Medium
Example customer gateway device configurations for static routing - AWS Site-to-Site VPN
Route-Based IPSec VPN
IPSec site to site Ubiquiti issue - Support - NethServer Community
Route-Based IPsec VPNs | Junos OS | Juniper Networks
Route internet traffic over IPSec VPN tunnel Strongswan -- Fortigate : r/fortinet
IPSec dynamic route-based S2S VPN Tunnel between two pfSense Appliances - .matrixpost.net
Setting Up Site-to-Site VPN
Azure ExpressRoute: Configure S2S VPN over Microsoft peering | Microsoft Docs
Fred de Jonge | Fortinet to Meraki site-2-site VPN
EdgeRouter - Route-Based Site-to-Site VPN to Azure (VTI over IKEv2/IPsec) – Ubiquiti Support and Help Center
Set Up IPSec Site to Site VPN Between Fortigate 60D (1) – Route-Based VPNs - InfoSec Memo
Static route problem with L2TP/IPSec VPN : r/PFSENSE
Route Based VPN
Traffic Selectors in Route-Based VPNs | Junos OS | Juniper Networks
IPSec
Auto Discovery VPNs | Junos OS | Juniper Networks
Site-to-site IPSec routing (Ubuntu, StrongSwan) - Server Fault