NicTool version

2.34

perl version

5.24.1

OS version

Debian 9

Expected behavior

Do not so easily allow a generated syntax error for CAA records.

Observed behavior

Surrounding double-quotes around cert issuer domain name is accepted on input, but is also apparently unconditionally added on output when producing BIND master zone file, leading to a syntax error on zone load by BIND.

Steps to reproduce

Add a CAA record, surround the cert issuer domain name with double quotes, use BIND backend, see issuer domain name surrounded by two double-quotes in the generated zone file.