https://github.com/ClusterLabs/resource-agents/pull/882

I have verified that /bin/netstat is a requirement for resource-agents-3.9.5-43

before the fix (resource-agents-3.9.5-39)
=========================================
[root@virt-253 ~]# mnt_redhat=/mnt/redhat/brewroot/packages/resource_agents
[root@virt-253 ~]# rpm -qp --requires \
    ${mnt_redhat}/3.9.5/39.el6/x86_64/resource-agents-3.9.5-39.el6.x86_64.rpm \
    | grep netstat
[root@virt-253 ~]# echo $?
[root@virt-253 ~]# 1


after the fix (resource-agents-3.9.5-43)
========================================
[root@virt-253 ~]# mnt_redhat=/mnt/redhat/brewroot/packages/resource_agents
[root@virt-253 ~]# rpm -qp --requires \
    ${mnt_redhat}/3.9.5/43.el6/x86_64/resource-agents-3.9.5-43.el6.x86_64.rpm \
    | grep netstat
/bin/netstat

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2017-0602.html