Note: Currently (2021-4), on my Puli device. The latest firmware as version 3.201 already contains all the software that OPENCLASH needed. You only need to download the libcap-bin and libcap build to use the pre-compiled openclash.
The following file is tested to working.
libcap-pkg-mips_24kc.zip (23.1 KB)
The official link is: Index of /snapshots/packages/mips_24kc/base/