changed add_dom to not even bother with anything head -c -1 related. should still work. added a comment at the top of dec2hex to suggest a shorter version that should work. added a script for generating zonefiles for bind

#!/bin/sh

if [ x"$1" = x ]; then
 echo "Usage: $0 <IP>" >&2; exit 255
fi

for x in $(echo -n "$1" | tr . ' ') ; do
 ./scripts/dec2hex "$x"
done | tr '\n' / | head -c -1 ; echo