I have an Unraid server (mini12) connected to an internal network running at 2.5 gb.  The external network runs at 1.0 gb.  I access the Unraid server via a Windows 11 pc in the internal network.

 

I have discovered that when I log into the server using the network name (mini12) from my local Windows pc, the file transfer speed is slow (~110 mb/sec).  However, when I log into the server using the internal IP address (10.0.0.112 - which is fixed), the file transfer speed is at the full 2.5 gb network speed (~240 mb/sec).   I use Tailscale (plug-in version) to give me remote access to the server, but the issue is with respect to internal network access, not external.  Having said that, I'm guessing that when I use the server name (mini12), I'm using Tailscale's DNS system which runs at my external internet speed (1.0 gb), hence my internal file transfers are affected.  I have confirmed that if I disconnect Tailscale from the Windows 11 pc, file transfers occur at the 2.5 gb network speed.

 

Therefore, I think I've got a Tailscale configuration problem.  Are there any Tailscale gurus out there that can help?

To finish this topic, the simple solution is to turn off Tailscale's DNS service.  It makes remote access a little more cumbersome, but easily overcome by creating favorites with the web browser.