sixty4k/st2-zonefile — pull request #8 by dnozay (2014-05-01 18:19:13+00:00)
Title: make TTL optional.

TTL is optional; plus you may use the $TTL directive to set default TTL.

http://www.bind9.net/manual/bind/9.3.2/Bv9ARM.ch06.html#zone_statement_grammar