Problem: When /etc/group contains a line such as +:*:: chkgrp issues the following warning: /usr/sbin/chkgrp: /etc/group: line 34: strtoul failed /etc/group is fine where line 34 is the one containing the NIS entry. This occurs regardless of whether the NIS entry is the last line in /etc/group. To reproduce: Add the line +:*:: to /etc/group on a NIS client and run /usr/sbin/chkgrp (or wait for periodic to do that).
This has been fixed in head in 2014/2015 so should be in all supported releases now.