Here is what I did to get a working Cloudflared for the RUT956 router.
Used a Debian vm with git and golang installed.
git clone GitHub - cloudflare/cloudflared: Cloudflare Tunnel client
cd cloudflared
GOOS-linux GOARCh=mipsle GOMIPS=softfloat go build github.com/cloudflare/cloudflared/cmd/cloudflared
After a couple of minutes, you should have a cloudflared file in the current folder.
There are other threads on this forum for installing it on your device..
Hope this is helpful.