The key thing is you should not have two network interfaces connected to the same network unless they are bonded; TCP/IP networking isn't meant to work that way. Things will "mostly work" but then some day you'll have a weird problem that you can't explain, such as WireGuard responding on eth1 but not eth0:  https://forums.unraid.net/topic/86021-wireguard-shows-data-inout-but-no-handshake/?tab=comments#comment-948325  (that is just an example, certainly not the only thing that could go
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