Building Pen from source on OpenBSD

Openbsd 5.6

export PKG_PATH=ftp://your.ftp.mirror/pub/OpenBSD/5.6/packages/\`machine -a\`/
pkg_add gcc

(pick the most recent versions)

tar zxfv pen-0.27.1.tar.gz
cd pen-0.27.1
./configure
make

Testing:

./pen -dfU 53 192.168.11.10:53

And from another computer:

ulric@qvp2:~$ dig @openbsd +short siag.nu
194.9.95.65