Can someone explain this?

tier:~# echo $PKG_PATH
ftp://ftp.se.netbsd.org/pub/NetBSD/packages/1.6/i386/All
tier:~# pkg_add -v irssi
parsing: .
path: /root/.
increasing RLIMIT_NOFILE to max. 1772 open files
trying PKG_PATH /root/.
pkg_add: no pkg found for 'irssi', sorry.
pkg_add: 1 package addition(s) failed
tier:~#

It's like it doesn't sense the PKG_PATH variable or something.
I'm using the shell zsh. I don't have this problem with tcsh.
Thanks in advance.

Simon Sandlund