In the rpcbind(8) man page I look for, but don't find, any documentation about key files are placed. Such as: where are state files stored? (I can find the info, but only by examining the source code and configuration settings) Where is the lock file stored (/var/run/rpcbind.lock -- also needs source code examination), and also 'what other relevant rpcbind files does a sysadm need to known about?'
Suggestion: Add a FILES section to the man page containing this information.
As at least some of it is configure-stuff, so man page may need to be built based on configuration.
(Or, do 'rpcbind --showconfiguration' which just prints actual confuration stuff that is difficult for an end sysadm to discover without access to actual build environment.)