Forwarding VPN to local network

Hi all.

I have a VPN setup using IPIP and OSPF. Running like a dream. I am now terminating the connection it is running on and want to run my entire network on my backup connection. Attached is a network diagram. The top is the existing setup where X.X.X.X network runs transparently on my network. I want to use the Y.Y.Y.Y network now. Will I be able to do with without expanding the network range of Y.Y.Y.Y (as it is /30 at the moment) and forward all IPIP traffic to the Clients site? Or will i need to extend the range and get Y.Y.Y.2 to also be Y.Y.Y.3 and do some sort of netmapping to the client’s site?

i hope you can all read my network map :slight_smile:

Thanks in advance.
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Any ideas on this?

You need to describe your topology better. Whats the VPN part, whats the client and the concentrator, etc. If we cant understand your topology, we cant help.