While reading up on portmap and rpcinfo, I noticed the BUGS section of rpcinfo.8 talked about problems interacting with NFS on SunOS versions < 3.0. While I suppose that fact might win a UNIX trivia contest for someone some day, I'd think we can do without it.
Index: rpcinfo.8 =================================================================== RCS file: /cvs/src/usr.bin/rpcinfo/rpcinfo.8,v retrieving revision 1.14 diff -u -p -u -p -r1.14 rpcinfo.8 --- rpcinfo.8 1 Sep 2010 14:43:34 -0000 1.14 +++ rpcinfo.8 20 Jul 2017 14:26:24 -0000 @@ -195,12 +195,3 @@ service use: .Rs .%T "RPC Programming Guide" .Re -.Sh BUGS -In releases prior to SunOS 3.0, the Network File System (NFS) did not -register itself with the portmapper; -.Nm -cannot be used to make -.Tn RPC -calls to the -.Tn NFS -server on hosts running such releases.
