RAK831+RPI3 for China Region(CN470-510) network connection error

Hi,

I’m using RAK831 with RPI3 on resin.io service(github.com/jpmeijers/ttn-resin-gateway-rpi.git), following tutorial
https://www.thethingsnetwork.org/docs/gateways/rak831/ and workshop slides by Kersing to make a gateway for China region CN470-510 but failed with error message:

error: [ttn] connection to server “router.dev.thethings.network” failed

after read several docs, in resin.io device dashboard, I add the environmental variable ROUTER_MQTT_ADDRESS with value router.cn.thethings.network:1883, still failed with similar message like:

error: [ttn] connection to server “router.cn.thethings.network” failed

then I tried within TTN console to select the router ttn-router-jp which marked as public, it works.

hope it’s a hint for you if you are woking on similiar stuff for non-standard configuration like EU868 or US915.

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and my question is : router.cn.thethings.network is not valid for public access anymore ? or just target for legacy packet forwarder instead of gateway connector with multi protocol packet forwarder from Kersing ? for the gateway connector, I can only access to the router marked with public in TTN console ?

thanks.