diff --git a/setup b/setup
index 8120667bb7e..decc13cc431 100755
--- a/setup
+++ b/setup
@@ -107,6 +107,7 @@ class Facts(object):
         self.facts['python_version'] = platform.python_version()
         self.facts['fqdn'] = socket.getfqdn()
         self.facts['hostname'] = self.facts['fqdn'].split('.')[0]
+        self.facts['domainname'] = '.'.join(self.facts['fqdn'].split('.')[1:])
         if self.facts['machine'] == 'x86_64':
             self.facts['architecture'] = self.facts['machine']
         elif Facts._I386RE.search(self.facts['machine']):