Site-to-Site VPN with overlapping network
I have 3 sites joined via site-to-site VPNs as follows:
Site A - 192.168.1.192/26
Site B - 192.168.168.0/26
Site C - 192.168.1.192/26, 192.168.2.192/26
Site B to Site A (192.168.168.0/26 - 192.168.1.192/26)
Site B to Site C (192.168.168.0/26 - 192.168.2.192/26)
Due to a partial move of services from A to C and needing to keep the same network I have ended up with two sites with the same network (192.168.1.192/26).
The challenge is how can I add the 192.168.1.192/26 to the site to site policy on B to C?
My guess is a typical site-to-site policy cannot be used. Also, I thought I could workaround this by splitting the subnet but I need the full range and had to abandon that idea.