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Description of problem:
Not able to set Cloned MAC Address for VLAN connection, filed goes empty after apply and reopen in nm-connection-manager. The Cloned MAC Address value does not write to ifcfg file as well. 

Version-Release number of selected component (if applicable):
NetworkManager-0.8.1-43.el6

How reproducible:
100%

Steps to Reproduce:
1. Create VLAN profile
2. try to set up Cloned MAC Address
3.
  
Actual results:
MAC will not save and change

Expected results:
should be saved and changed

Additional info:
cat /etc/sysconfig/network-scripts/ifcfg-VLAN_connection_1 
VLAN=yes
TYPE=Vlan
DEVICE=vlan100
PHYSDEV=eth1
VLAN_ID=100
REORDER_HDR=0
BOOTPROTO=none
IPADDR=192.168.122.177
PREFIX=24
DEFROUTE=yes
IPV4_FAILURE_FATAL=yes
IPV6INIT=no
NAME="VLAN connection 1"
UUID=87fc8fac-49a3-49f2-8fec-0c2820cabe1a
ONBOOT=yes

This is the problem in nm-connection-editor.
The "parent interface" combo box doesn't set active item when initialized. It causes Cloned MAC and MTU not being saved when "Parent interface" was not re-selected (touched).

Created attachment 772263 [details]
[PATCH] editor: correcly save VLAN MAC address and MTU

This patch for RHEL6 fixes the issue. It is based on an upstream commit, however the commit had to be edited a bit for RHEL 6.5.

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.

http://rhn.redhat.com/errata/RHBA-2013-1670.html