Thank you! It's ironic - we initially suggested doing something like this, but they were against us making any sorts of changes to their MPLS setup. At this point it's as easy as adding an interface on their Data Center firewall cluster in the /30 leaving the existing 192.168.8.0/22 on the Datacenter alone, changing the Meraki interface to the /30 and changing routing on both ends. Then the VPN will just work. I've detailed it to them, and hope they will come to their senses 🙂 Thanks!
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