Sunshine on Windows with 2 NICs: how can I force it to use only one local IP?

[brs-aydin]

Select Topic Area

Question

Body

Hi,

I’m using Sunshine on Windows as the host and Moonlight as the client.

My Windows host has two active network adapters with two different local IP ranges:

192.168.20.x
192.168.8.x

I want Sunshine to be reachable only through 192.168.20.x
I do not want Moonlight to connect through 192.168.8.x

Right now, Moonlight can connect using both IP addresses.

I’m looking for the best Windows-specific way to restrict this.

Is setting bind_address to the 192.168.20.x address enough on Windows?
Do I also need Windows Defender Firewall rules to block the 192.168.8.x interface?
Does Moonlight cache/discover both addresses even if Sunshine is bound to one IP?
What is the cleanest recommended setup for Windows with two active NICs?

Have a nice day

[ReenigneArcher]

Is setting bind_address to the 192.168.20.x address enough on Windows?

Should be enough.

Do I also need Windows Defender Firewall rules to block the 192.168.8.x interface?

The firewall rules for Sunshine is set by executable, not address/ports. At least if you're using the one from our installer.

Does Moonlight cache/discover both addresses even if Sunshine is bound to one IP?

Should only find the one it's bound to.

What is the cleanest recommended setup for Windows with two active NICs?

Just try and see what works...

[brs-aydin]

Thanks for help✌️

[brs-aydin]

I added bind_address = 192.168.20.54 to the config, restarted Sunshine, and the log confirms bind_address = 192.168.20.54. However, I can still access the Sunshine web UI from 192.168.8.189:47990, and Moonlight can still connect through the 192.168.8.x interface as well.

[ReenigneArcher]

That feature is not in 2025.924. I just merged it in December.

LizardByte/Sunshine#4481