[Bug 267301] nfs uses udp for portmapper even when proto=tcp specified

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267301

Rick Macklem <rmacklem@FreeBSD.org> changed:

           What    |Removed                     |Added
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           Assignee|bugs@FreeBSD.org            |rmacklem@FreeBSD.org

--- Comment #2 from Rick Macklem <rmacklem@FreeBSD.org> ---
Created attachment 237626
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=237626&action=edit
Modify rpcb_getaddr() so that it might use TCP for the Portmapper

This patch comments out the code in rpcb_getaddr()
that forces use of UDP. Although not yet tested,
I believe this will make the function use TCP if the
nconf argument specifies TCP. (I am working on getting
a build done to test this.)

I did this instead of deleting -DPORTMAP from
Makefile.inc because Linux still uses Portmapper
Version 2 protocol and deleting -DPORTMAP would
disable Version 2.  As such, this patch results in
less change and, therefore, less likelyhood of
causing a POLA violation.

Hopefully the reporter can test this for the
Azure mount case?

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