Fix detect network by ip and mask if ip and mask absent.

pym/cl_fill_install.py

@@ -121,7 +121,10 @@ class fillVars(object, glob_attr):
             mapInterface = {}
             mapInterface["ip"] = ipaddr
             mapInterface["cidr"] = str(ip.maskToCidr(mask)) if mask else ""
-            mapInterface["network"] = ip.getIpNet(ipaddr,mask=mask)
+            if ipaddr and mask:
+                mapInterface["network"] = ip.getIpNet(ipaddr,mask=mask)
+            else:
+                mapInterface["network"] = ""
             mapInterface["dhcp"] = "on" if dhcp else "off"
             mapInterface["mac"] = mac
             mapInterface["name"] = "{vendor} {name}".format(**pciInfo)