pkg_add and 9.1RC3

[doug]

Doing pkg_add in the normal way:

pkg_add -r diffuse
Error: Unable to get 
ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-9.1-release/Latest/diffuse.tbz: 
File unavailable (e.g., file not found, no access)

To make it work:

setenv PACKAGESITE ftp://ftp.freebsd.org/pub/FreeBSD/ports/amd64/packages-9-stable/devel/
pkg_add -r diffuse-0.4.6_2

Is this just the way it is, or is there some magic to make it somewhat less 
tedious?