ports on FreeBSD 4

[Brian Behlendorf]

I realize the ports on RELENG_4 have been EOL'd, but I'm stuck on 4 for 
one system due to instability currently with the RELENG_6 box that will 
take its place.  I'd like to be able to get a ports tree that represents 
the state of things just before support for 4.x was dropped. I thought I 
read that the tag for that was RELENG_4_EOL.  I tried using that by going 
into /etc/make.conf and changing

PORTSSUPFILE=   /usr/share/examples/cvsup/ports-supfile

to

PORTSSUPFILE=   /usr/local/etc/ports-supfile

and in /usr/local/etc/ports-supfile, a copy of 
/usr/share/examples/cvsup/ports-supfile, I changed

*default release=cvs tag=.

to

*default release=cvs tag=RELENG_4_EOL

I did a "make update" in /usr/ports and it started to remove every file 
under /usr/ports.  Yech.  I had to go back to using 
/usr/share/examples/cvsup/ports-supfile and do a make update from 
/usr/src to get a /usr/ports tree back, though now of course that 
/usr/ports tree doesn't work for 4.x (it expects the new rc.subr stuff 
for example).

I realize I'm treading on retired ground here... but any ideas?

 	Brian