Is it possible to run NetBEUI over EOIP tunnel?

What is NetBEUI ?

Very poor info

Oh geez, NetBEUI (NetBIOS Extended User Interface). It was the MS(/IBM) LAN Manager protocol. If you used Windows for Workgroups 3.11, it was used for networking (before a TCP/IP stack was added later).

But yes, EoIP should work. It's a layer-2 protocol. You may need to set MTU to 1500 on EoIP – there was no PMTUD in NetBEUI. Or perhaps even set MTU to same as L2MTU, or 65535. I don't know how MTU worked NetBEUI.