hi rke2 - I'm trying to install Flannel but the loopback and all other binaries are missing from the retail installation from flannel.io - what am I doing wrong?

It's hard to say since I don't know what steps you're following. Is there any reason you're not just using the flannel built in to canal?

yeah, doesn't work in Docker. I've fixed it through multus (which gave the bins) and flannel. Pretty sure the issue is with them but it's only well documented for kubeadm/spray