How do get UPnP to work with Orbot app for "unrestricted" proxy quality in Snowflake/Kindness Mode?

Installing and Using OpenWrt
1

I just installed miniupnpd-nftables since Orbot on my phone is requesting it so that snowflake mode works better, but I cannot find where/how to enable it. I have tried logging out and back into LuCI to no avail. Even though SSH is enabled, attempting to connect to the router via SSH just hangs and I am not able to get any response in my terminal.

System

Hostname OpenWrt
Model OpenWrt One
Architecture ARMv8 Processor rev 4
Target Platform mediatek/filogic
Firmware Version OpenWrt 25.12.5 r33051-f5dae5ece4 / LuCI openwrt-25.12 branch 26.180.75667~128a781
Kernel Version 6.12.94
2

There's a luci-app for it as well luci-app-upnp you could use that to configure upnp it's pretty easy to configure it from there

3

I installed luci-app-upnp, went to Services > checked "Start service" > Save & Apply, but Orbot (Android app) still doesn't seem to recognize that UPnP was enabled. Is there any other setting that I need to change for it to be accessible/useful to the app?

4

I've never used Orbot so I'm not really sure I just helped you with upnp on how to enable it via GUI but for others to help you out you should also tell that if you're behind a NAT or you have a Public IP Address as UPnP doesn't work on network behind NAT

5

I am using a residential IP, so I presume it would be behind Carrier-Grade Network Address Translation (CGNAT). Does this mean that UPnP would be useless in my case?

6

From what I heard yeah but I tried Orbot just now with snowflake just to let you know and it worked just fine though this is not really a openwrt thing

I'm not really that knowledgeable in OpenWrt yet so wait for other if someone responds

7

Interesting, thanks for taking the time to test it! Will see what others on here say and if Guardian Project (the app devs) say anything.

8

Depends on your ISP if you're indeed behind CGNAT. In fact miniupnpd implements several technologies (PCP, UPnP for IPv4 and pinholes for IPv6). Which one is used by Orbot - I have no idea.