ref: 4e61bc282c2869ae8442e356ffd2da3a3818dd51
parent: 3fa5aaa1bcb9f1ba80e708aea3672fbf4b7f098d
author: cinap_lenrek <cinap_lenrek@felloff.net>
date: Sat Sep 1 10:59:19 EDT 2018
ip/dhcpd: add varargck pragma for warning() and fatal(), do syserr with %r format