A simple preprocessor for zone files written in awk. Creates forward and reverse zones from one single file.

Some DNS zones are rather boring: just A records for each machine/interface and its PTR records in the reverse zone. No other resource type. Just a list of all devices in your network which is edited frequently. Over time the large number of quite similar lines becomes more and more unreadable. And you make mistakes: forward and reverse zones get out of sync or you forget about some interfaces.

Lazyzone allows you to write your zone in a more compact form with less typing and fewer chances for mistakes. It's far from a perfect solution, but it fits my own needs!

Input is just a simple two-column text-file:

[eth0.]server  10.0.0.1
fc0.server     192.168.0.1
desktop        10.0.0.100-200

Put parts of the name in square brackets to create an additional CNAME of the shorter name outside brackets to the full name given.

If the last octet of the address consists of a range, multiple records are created. Each record's name is appended the increasing value of a counter.

(supply each via: -v key=value)

• domain value for $ORIGIN
• ttl default $TTL-value for zone (append unit, e.g. 1d)
• dns_server which dns-server is authorative for this zone
• mail mailbox of dns-admin
• serial serial-number for SOA record
• refresh slave refresh after refresh seconds
• retry time between retries of the slave
• expire slave won't answer authoritatively if not reaching the master within expire seconds
• minimum_ttl negative caching time
• reverse_prefix if set a reverse-zone will be generated containing all ips of the supplied prefix

Make sure that mawk or gawk is installed, then run:

sudo make install

If you need a Debian package, run:

make deb
sudo apt-get install debian/lazyzone-*.deb

That package is also available for download through Github Releases.

This software is licensed under GPLv3.