RHEL 6.4 nc dependency issue

Hi,

I am getting the following dependency issue , Please help
return _call(command, logoutput, True, cwd, env, preexec_fn, user, wait_for_finish, timeout)
File “/usr/lib/python2.6/site-packages/resource_management/core/shell.py”, line 90, in _call
raise Fail(err_msg)
Fail: Execution of ‘/usr/bin/yum -d 0 -e 0 -y install hadoop-yarn’ returned 1. This system is not registered with RHN Classic or RHN Satellite.
You can use rhn_register to register.
RHN Satellite or RHN Classic support will be disabled.
Error: Package: hadoop-2.4.0.2.1.5.0-695.el6.x86_64 (HDP-2.1)
Requires: nc
You could try using –skip-broken to work around the problem
You could try running: rpm -Va –nofiles –nodigest