Setup write proxy

[Ruddick, Chris \(Mission Systems\)]

I am having some trouble setting up a write proxy from a secondary
server to a primary using version 1.12.13.

On the secondary server I have:
$CVSROOT=/secondary/root
$CVS_RSH=/primary/bin/rsh
$CVS_SERVER=/primary/bin/cvs
In the CVS config file, I have:
PrimaryServer=:ext:address@hidden:/primary/root

The primary server has a standard configuration, and uses CVSup to
replicate changes back down to the secondary.  This is working fine.
CVS calls from the secondary specifying the primary server as the cvs
root work:
cvs -d :ext:address@hidden:/primary/root commit module

I'm assuming the write proxy should be established when a write call is
made, i.e. "cvs commit module".  I must be missing something because it
never writes to the primary, only the secondary.  I've read through the
documentation on this and still can't get it.  Any thoughts?