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When two subnets are connected via Wireguard, clients can communicate to each other using TCP/UDP/ICMP. Can clients run IPIP (protocol 4) tunnels in Wireguard as in OpenVPN? I'm planning to migrate from OpenVPN to Wireguard and checking if it will work.

Thanks

laimison
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Yes, you can run anything L3 and above (ie with IP packets) through WireGuard, including IPIP, GRE, Geneve, etc.

Justin Ludwig
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  • It works without a hassle. I've done the migration. Wireguard works via IPIP, then inside this, there is another IPIP tunnel and inside this tunnel there are IPs which are visible even in `tcpdump`. – laimison Jan 13 '22 at 10:51