Building Pen from Git on OpenBSD - UlricE/pen GitHub Wiki

Openbsd 5.6

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

(pick the most recent versions)

mkdir Git
cd Git
git clone https://github.com/UlricE/pen.git
cd pen
export AUTOMAKE_VERSION=1.14 AUTOCONF_VERSION=2.69

(make the versions match what you installed earlier)

aclocal
automake --add-missing
autoconf
./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