When you run your routing-protocol over your p2p-line and the VPN and the cost over the VPN is higher then the cost over your p2p-link, then you will get the preferred result. But If both IPSec-boxes are IOS-routers, I wouldn't use GRE/IPSec any more. Virtual Tunnel-Interfaces (VTIs) are much easier to handle and give you all you need:
BenefitsDocumentationPrerequisiteImage Download LinksLimitationsSupported PlatformsLicense RequirementsTopologyStep-By-Step ConfigurationConfigure Virtual ServiceActivate the virtual service and configure guest IPsConfiguring UTD (Service Plane)Configurin...
Login to the FXOS chassis manager.
Direct your browser to https://hostname/, and log-in using the user-name and password.
Go to Help > About and check the current version:
Check the current version availa...
We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...