How to use AT+QIP6CFG command on RM520N?

I noticed that the module has the command AT+QIP6CFG, but I can’t find a description of it in the manual, would that help me?
The return display for this command is
AT+QIP6CFG=?
+QIP6CFG: “PD_addr”,(1-42)[,]
+QIP6CFG: “PD_enable”,(1-42)[,(0,1)]
It looks like it has something to do with setting up IPV6-PD, which is exactly what I need, thanks!