I have a routing-based vpn between an srx and a fortigate, using unnumbered address on the tunnell. What I would like is to provide the default route for the remote network, i.e. NAT behind the same interface which is used for the unnumbered configuration.
I have source nat rules configured, but when tracing the flow, I can see the traffic leaving the correct interface, but it is not NAT'ed.
Does anyone know if this is possible, or if it might be possible to set up PBR with this configuration?