How to set snmp proxy with UCI

I just have a need to set snmp proxy on openwrt 21.03

I've tried to it with UCI and conf file directly.

The UCI method did not take affect and the conf file will lose after process restart.

Could anyone help to list the options for proxy? or other way to get the proxy working?

An SNMP proxy...of what?

(BTW, OpenWrt is a router, you can NAT and route traffic too.)

not suit my need

Could you just tell me whether the proxy feature is supported or not on OpenWRT?

If it could be supported, Could the proxy be configured by UCI?