Subject: dhclient --dad-wait-time command line param cannot be set on Centos
Message-ID: <rt-4.4.1-77598-1510174969-541.0-0-0@isc.org>
From: tmark@isc.org
Content-Type: text/plain; charset="utf-8"
Date: Wed, 08 Nov 2017 21:02:49 +0000
X-Mailer: MIME-tools 5.508 (Entity 5.508)
Content-Transfer-Encoding: binary
Content-Disposition: inline
To: dhcp-public@isc.org
X-RT-Interface: Web
MIME-Version: 1.0
X-RT-Original-Encoding: utf-8
Content-Length: 316

The dhclient command line parameter, --dad-wait-time, cannot be set to valid values.  One is always presented with an error "Invalid value for --dad-wait-time: <value entered>".

Turns out the call to strtol should be preceded by setting errno to 0.  Apparently the function may not always set it to zero on success.