Tailscale works great by itself, but Tailscale is also able to work with ICS (Internet Connection Sharing) of Windows and enabling subnet routing and sharing of devices on the ICS subnet. Tailscale as a replacement for WD Discovery is described here in this subforum: NOT SUPPORTED June 2023 Local drive mounting via WD Discovery for My Cloud Home desktop ends **with Tailscale Fix DIY - #12 by NoPlex
Tailscale allows easy desktop and mobile sharing of MCH without the use of WD servers or WD apps.
In the ICS example above, one should disable ICS first before installing Tailscale then re-enable it again after Tailscale has been installed in Windows and authenticated. Then find the MCH address using arp -a as shown above and follow this below:
Here is the how-to-configure TailScale Subnet Router for Windows Machine
The Windows installer places a tailscale.exe command in %PATH%. You set Windows up as a subnet router using a cmd.exe shell with the same command as Linux:
tailscale up --advertise-routes=…
So, if the ICS assigned IP Range is 192.168.137.1,
you’d likely want to use the following on CMD:
tailscale up --advertise-routes=192.168.137.0/24
OPTIONAL if you have another set of subnet, remember to add rightaway after the first one, otherwise you will have to reset everything and do it again but with all the subnet you want to add.
then, go to Tailscale
Enable ICS subnet routing
click Edit Route Setting on that Windows Machine.Turn on the Subnet Route , all done!
that’s it! 
Copying files over different subnets without configuring Windows Firewall, at 56 MBps.
** Tailscale Subnet routing performs best with a Linux machine (physical or virtual router running Linux such as OpenWRT for example), but performance is acceptable with recent Tailscale development since version 1.26 and higher on Windows.
