In the following topology, I would like to change the source interface for my site-to-site VPN from my gateway's main public IP address to another interface on the gateway, but I have nothing in the drop-down when I try to do this in the gateway object inside the community. I cannot change the main gateway IP address as this affects other VPNs.
(GW main interface) 10.10.10.10 ------------->192.168.10.10 (3rd Party)
But I want:
(GW other interface) 188.8.131.52 ------------->192.168.10.10 (3rd Party)
I try to change my source interface inside VPN community but get nothing in drop-down: