Man pages matching name rpcgen in section 1:

rpcgen.1.en	debian 10 / libc-dev-bin
rpcgen.1.ja	debian 10 / manpages-ja
rpcgen.1.en	debian 11 / libc-dev-bin
rpcgen.1.ja	debian 11 / manpages-ja
rpcgen.1.ja	debian 12 / manpages-ja
rpcgen.1.en	debian 12 / rpcsvc-proto